31120202031000 has 64 divisors (see below), whose sum is σ = 97095030346080. Its totient is φ = 8298720540800.

The previous prime is 31120202030993. The next prime is 31120202031059. The reversal of 31120202031000 is 13020202113.

It is a super-2 number, since 2×31120202031000² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5186697339 + ... + 5186703338.

Almost surely, 2^{31120202031000} is an apocalyptic number.

31120202031000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31120202031000 is an abundant number, since it is smaller than the sum of its proper divisors (65974828315080).

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

31120202031000 is a wasteful number, since it uses less digits than its factorization.

31120202031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10373400701 (or 10373400687 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31120202031000 its reverse (13020202113), we get a palindrome (31133222233113).

The spelling of 31120202031000 in words is "thirty-one trillion, one hundred twenty billion, two hundred two million, thirty-one thousand".