31211203014 has 80 divisors (see below), whose sum is σ = 71746456320. Its totient is φ = 10135186560.

The previous prime is 31211202959. The next prime is 31211203063. The reversal of 31211203014 is 41030211213.

It is a super-2 number, since 2×31211203014² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5131227 + ... + 5137305.

It is an arithmetic number, because the mean of its divisors is an integer number (896830704).

Almost surely, 2^31211203014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31211203014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35873228160).

31211203014 is an abundant number, since it is smaller than the sum of its proper divisors (40535253306).

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

31211203014 is a wasteful number, since it uses less digits than its factorization.

31211203014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907 (or 6898 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31211203014 its reverse (41030211213), we get a palindrome (72241414227).

The spelling of 31211203014 in words is "thirty-one billion, two hundred eleven million, two hundred three thousand, fourteen".