31133103100 has 36 divisors (see below), whose sum is σ = 73700548488. Its totient is φ = 11321128000.

The previous prime is 31133103097. The next prime is 31133103107. The reversal of 31133103100 is 130133113.

It is a super-2 number, since 2×31133103100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133103107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14150311 + ... + 14152510.

It is an arithmetic number, because the mean of its divisors is an integer number (2047237458).

Almost surely, 2^31133103100 is an apocalyptic number.

It is an amenable number.

31133103100 is an abundant number, since it is smaller than the sum of its proper divisors (42567445388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31133103100 is a wasteful number, since it uses less digits than its factorization.

31133103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28302846 (or 28302839 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 31133103100 its reverse (130133113), we get a palindrome (31263236213).

The spelling of 31133103100 in words is "thirty-one billion, one hundred thirty-three million, one hundred three thousand, one hundred".