31020711102 has 40 divisors (see below), whose sum is σ = 69633038376. Its totient is φ = 10321840368.

The previous prime is 31020711101. The next prime is 31020711109. The reversal of 31020711102 is 20111702013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020711101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78853 + ... + 261264.

Almost surely, 2^31020711102 is an apocalyptic number.

31020711102 is an abundant number, since it is smaller than the sum of its proper divisors (38612327274).

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

31020711102 is a wasteful number, since it uses less digits than its factorization.

31020711102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340694 (or 340685 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The spelling of 31020711102 in words is "thirty-one billion, twenty million, seven hundred eleven thousand, one hundred two".