31219242630 has 32 divisors (see below), whose sum is σ = 75613586400. Its totient is φ = 8248753152.

The previous prime is 31219242617. The next prime is 31219242631. The reversal of 31219242630 is 3624291213.

It is a super-2 number, since 2×31219242630² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31219242591 and 31219242600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31219242631) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4770315 + ... + 4776854.

It is an arithmetic number, because the mean of its divisors is an integer number (2362924575).

Almost surely, 2^31219242630 is an apocalyptic number.

31219242630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31219242630 is an abundant number, since it is smaller than the sum of its proper divisors (44394343770).

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

31219242630 is a wasteful number, since it uses less digits than its factorization.

31219242630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9547288.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 31219242630 in words is "thirty-one billion, two hundred nineteen million, two hundred forty-two thousand, six hundred thirty".