31032311123102 has 4 divisors (see below), whose sum is σ = 46548466684656. Its totient is φ = 15516155561550.

The previous prime is 31032311123081. The next prime is 31032311123113. The reversal of 31032311123102 is 20132111323013.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×31032311123102² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7758077780774 + ... + 7758077780777.

It is an arithmetic number, because the mean of its divisors is an integer number (11637116671164).

Almost surely, 2^{31032311123102} is an apocalyptic number.

31032311123102 is a deficient number, since it is larger than the sum of its proper divisors (15516155561554).

31032311123102 is a wasteful number, since it uses less digits than its factorization.

31032311123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15516155561553.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31032311123102 its reverse (20132111323013), we get a palindrome (51164422446115).

The spelling of 31032311123102 in words is "thirty-one trillion, thirty-two billion, three hundred eleven million, one hundred twenty-three thousand, one hundred two".