31130213030 has 48 divisors (see below), whose sum is σ = 66412774800. Its totient is φ = 10471825728.

The previous prime is 31130212999. The next prime is 31130213041. The reversal of 31130213030 is 3031203113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 573380 + ... + 625319.

It is an arithmetic number, because the mean of its divisors is an integer number (1383599475).

Almost surely, 2^31130213030 is an apocalyptic number.

31130213030 is an abundant number, since it is smaller than the sum of its proper divisors (35282561770).

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

31130213030 is a wasteful number, since it uses less digits than its factorization.

31130213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198773 (or 1198766 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31130213030 its reverse (3031203113), we get a palindrome (34161416143).

The spelling of 31130213030 in words is "thirty-one billion, one hundred thirty million, two hundred thirteen thousand, thirty".