313561290 has 48 divisors (see below), whose sum is σ = 875416032. Its totient is φ = 71670816.

The previous prime is 313561279. The next prime is 313561291. The reversal of 313561290 is 92165313.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (313561291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105184 + ... + 108123.

It is an arithmetic number, because the mean of its divisors is an integer number (18237834).

Almost surely, 2^313561290 is an apocalyptic number.

313561290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

313561290 is an abundant number, since it is smaller than the sum of its proper divisors (561854742).

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

313561290 is a wasteful number, since it uses less digits than its factorization.

313561290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213331 (or 213324 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 313561290 is about 17707.6619009964. The cubic root of 313561290 is about 679.3717452796.

The spelling of 313561290 in words is "three hundred thirteen million, five hundred sixty-one thousand, two hundred ninety".