31100203312 has 20 divisors (see below), whose sum is σ = 60259443496. Its totient is φ = 15549379200.

The previous prime is 31100203307. The next prime is 31100203363. The reversal of 31100203312 is 21330200113.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538963 + ... + 593869.

Almost surely, 2^31100203312 is an apocalyptic number.

It is an amenable number.

31100203312 is a deficient number, since it is larger than the sum of its proper divisors (29159240184).

31100203312 is a wasteful number, since it uses less digits than its factorization.

31100203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90316 (or 90310 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31100203312 its reverse (21330200113), we get a palindrome (52430403425).

The spelling of 31100203312 in words is "thirty-one billion, one hundred million, two hundred three thousand, three hundred twelve".