31552051313 has 16 divisors (see below), whose sum is σ = 32656874880. Its totient is φ = 30471002496.

The previous prime is 31552051249. The next prime is 31552051331. The reversal of 31552051313 is 31315025513.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31552051313 - 2⁶ = 31552051249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31552051393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797483 + ... + 836111.

It is an arithmetic number, because the mean of its divisors is an integer number (2041054680).

Almost surely, 2^31552051313 is an apocalyptic number.

It is an amenable number.

31552051313 is a deficient number, since it is larger than the sum of its proper divisors (1104823567).

31552051313 is a wasteful number, since it uses less digits than its factorization.

31552051313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38936.

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 31552051313 its reverse (31315025513), we get a palindrome (62867076826).

The spelling of 31552051313 in words is "thirty-one billion, five hundred fifty-two million, fifty-one thousand, three hundred thirteen".