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32013031031 = 71450887761
BaseRepresentation
bin11101110100001000…
…000001011001110111
310001122001011110210222
4131310020001121313
51011030313443111
622412342204555
72212212162662
oct356410013167
9101561143728
1032013031031
1112638581043
12625512375b
133032452817
1417999366d9
15c757127db
hex774201677

32013031031 has 4 divisors (see below), whose sum is σ = 32463918864. Its totient is φ = 31562143200.

The previous prime is 32013031021. The next prime is 32013031079. The reversal of 32013031031 is 13013031023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13013031023 = 97134154959.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-32013031031 is a prime.

It is a super-2 number, since 2×320130310312 (a number of 22 digits) 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 (32013031021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225443810 + ... + 225443951.

It is an arithmetic number, because the mean of its divisors is an integer number (8115979716).

Almost surely, 232013031031 is an apocalyptic number.

32013031031 is a deficient number, since it is larger than the sum of its proper divisors (450887833).

32013031031 is an equidigital number, since it uses as much as digits as its factorization.

32013031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450887832.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 32013031031 its reverse (13013031023), we get a palindrome (45026062054).

The spelling of 32013031031 in words is "thirty-two billion, thirteen million, thirty-one thousand, thirty-one".

Divisors: 1 71 450887761 32013031031