31311213331102 has 8 divisors (see below), whose sum is σ = 46968371632512. Its totient is φ = 15655089453600.

The previous prime is 31311213331043. The next prime is 31311213331109. The reversal of 31311213331102 is 20113331211313.

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

It is a super-4 number, since 4×31311213331102⁴ (a number of 55 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311213331109) 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, 258530299 + ... + 258651382.

It is an arithmetic number, because the mean of its divisors is an integer number (5871046454064).

Almost surely, 2^{31311213331102} is an apocalyptic number.

31311213331102 is a deficient number, since it is larger than the sum of its proper divisors (15657158301410).

31311213331102 is a wasteful number, since it uses less digits than its factorization.

31311213331102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517211954.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31311213331102 its reverse (20113331211313), we get a palindrome (51424544542415).

The spelling of 31311213331102 in words is "thirty-one trillion, three hundred eleven billion, two hundred thirteen million, three hundred thirty-one thousand, one hundred two".