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3020313431 = 29104148739
BaseRepresentation
bin1011010000000110…
…0101001101010111
321210111020211010102
42310001211031113
522141200012211
61215411444315
7134563145342
oct26401451527
97714224112
103020313431
11130a985203
127035b669b
13391977515
142091b3459
1512a257a3b
hexb4065357

3020313431 has 4 divisors (see below), whose sum is σ = 3124462200. Its totient is φ = 2916164664.

The previous prime is 3020313409. The next prime is 3020313437. The reversal of 3020313431 is 1343130203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343130203 = 1779007659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3020313431 is a prime.

It is a super-2 number, since 2×30203134312 = 18244586442957983522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020313437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52074341 + ... + 52074398.

It is an arithmetic number, because the mean of its divisors is an integer number (781115550).

Almost surely, 23020313431 is an apocalyptic number.

3020313431 is a deficient number, since it is larger than the sum of its proper divisors (104148769).

3020313431 is a wasteful number, since it uses less digits than its factorization.

3020313431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104148768.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 3020313431 is about 54957.3783126524. The cubic root of 3020313431 is about 1445.4974769677.

Adding to 3020313431 its reverse (1343130203), we get a palindrome (4363443634).

It can be divided in two parts, 30203 and 13431, that added together give a palindrome (43634).

The spelling of 3020313431 in words is "three billion, twenty million, three hundred thirteen thousand, four hundred thirty-one".

Divisors: 1 29 104148739 3020313431