31213313130 has 32 divisors (see below), whose sum is σ = 75574897344. Its totient is φ = 8249889536.

The previous prime is 31213313119. The next prime is 31213313141. The reversal of 31213313130 is 3131331213.

It is an interprime number because it is at equal distance from previous prime (31213313119) and next prime (31213313141).

It is a junction number, because it is equal to n+sod(n) for n = 31213313097 and 31213313106.

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, 4600344 + ... + 4607123.

It is an arithmetic number, because the mean of its divisors is an integer number (2361715542).

Almost surely, 2^31213313130 is an apocalyptic number.

31213313130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31213313130 is an abundant number, since it is smaller than the sum of its proper divisors (44361584214).

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

31213313130 is a wasteful number, since it uses less digits than its factorization.

31213313130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9207590.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31213313130 its reverse (3131331213), we get a palindrome (34344644343).

The spelling of 31213313130 in words is "thirty-one billion, two hundred thirteen million, three hundred thirteen thousand, one hundred thirty".