31010102420 has 24 divisors (see below), whose sum is σ = 71041326048. Its totient is φ = 11276400800.

The previous prime is 31010102419. The next prime is 31010102423. The reversal of 31010102420 is 2420101013.

It is a junction number, because it is equal to n+sod(n) for n = 31010102395 and 31010102404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010102423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70477286 + ... + 70477725.

It is an arithmetic number, because the mean of its divisors is an integer number (2960055252).

Almost surely, 2^31010102420 is an apocalyptic number.

It is an amenable number.

31010102420 is an abundant number, since it is smaller than the sum of its proper divisors (40031223628).

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

31010102420 is a wasteful number, since it uses less digits than its factorization.

31010102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140955031 (or 140955029 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 31010102420 its reverse (2420101013), we get a palindrome (33430203433).

The spelling of 31010102420 in words is "thirty-one billion, ten million, one hundred two thousand, four hundred twenty".