31213002030 has 64 divisors (see below), whose sum is σ = 86138131968. Its totient is φ = 7090623360.

The previous prime is 31213002017. The next prime is 31213002043. The reversal of 31213002030 is 3020031213.

It is an interprime number because it is at equal distance from previous prime (31213002017) and next prime (31213002043).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421701 + ... + 490160.

It is an arithmetic number, because the mean of its divisors is an integer number (1345908312).

Almost surely, 2^31213002030 is an apocalyptic number.

31213002030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31213002030 is an abundant number, since it is smaller than the sum of its proper divisors (54925129938).

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

31213002030 is a wasteful number, since it uses less digits than its factorization.

31213002030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912041.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31213002030 its reverse (3020031213), we get a palindrome (34233033243).

The spelling of 31213002030 in words is "thirty-one billion, two hundred thirteen million, two thousand, thirty".