312632990 has 16 divisors (see below), whose sum is σ = 563101200. Its totient is φ = 124972800.

The previous prime is 312632989. The next prime is 312632993. The reversal of 312632990 is 99236213.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 312632990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312632993) 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, 7790 + ... + 26190.

It is an arithmetic number, because the mean of its divisors is an integer number (35193825).

Almost surely, 2^312632990 is an apocalyptic number.

312632990 is a deficient number, since it is larger than the sum of its proper divisors (250468210).

312632990 is a wasteful number, since it uses less digits than its factorization.

312632990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20107.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 312632990 is about 17681.4306547858. The cubic root of 312632990 is about 678.7006546027.

The spelling of 312632990 in words is "three hundred twelve million, six hundred thirty-two thousand, nine hundred ninety".