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31341031421 = 720359219917
BaseRepresentation
bin11101001100000100…
…100010111111111101
32222220012200100122112
4131030010202333331
51003141301001141
622221535023405
72156442241310
oct351404427775
988805610575
1031341031421
1112323216867
1260a806ab65
132c5616820b
1417345aa977
15c367217eb
hex74c122ffd

31341031421 has 8 divisors (see below), whose sum is σ = 35820243840. Its totient is φ = 26862299568.

The previous prime is 31341031391. The next prime is 31341031427. The reversal of 31341031421 is 12413014313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31341031421 - 226 = 31273922557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31341031427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32555 + ... + 252471.

It is an arithmetic number, because the mean of its divisors is an integer number (4477530480).

Almost surely, 231341031421 is an apocalyptic number.

It is an amenable number.

31341031421 is a deficient number, since it is larger than the sum of its proper divisors (4479212419).

31341031421 is a wasteful number, since it uses less digits than its factorization.

31341031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240283.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31341031421 its reverse (12413014313), we get a palindrome (43754045734).

The spelling of 31341031421 in words is "thirty-one billion, three hundred forty-one million, thirty-one thousand, four hundred twenty-one".

Divisors: 1 7 20359 142513 219917 1539419 4477290203 31341031421