31123401525352 has 16 divisors (see below), whose sum is σ = 58632948374400. Its totient is φ = 15487948625520.

The previous prime is 31123401525317. The next prime is 31123401525353. The reversal of 31123401525352 is 25352510432113.

It is a happy number.

It is a super-2 number, since 2×31123401525352² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31123401525353) 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, 9219015352 + ... + 9219018727.

It is an arithmetic number, because the mean of its divisors is an integer number (3664559273400).

Almost surely, 2^{31123401525352} is an apocalyptic number.

It is an amenable number.

31123401525352 is a deficient number, since it is larger than the sum of its proper divisors (27509546849048).

31123401525352 is a wasteful number, since it uses less digits than its factorization.

31123401525352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18438034296 (or 18438034292 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 31123401525352 its reverse (25352510432113), we get a palindrome (56475911957465).

The spelling of 31123401525352 in words is "thirty-one trillion, one hundred twenty-three billion, four hundred one million, five hundred twenty-five thousand, three hundred fifty-two".