313311402 has 20 divisors (see below), whose sum is σ = 702049986. Its totient is φ = 104437080.

The previous prime is 313311391. The next prime is 313311407. The reversal of 313311402 is 204113313.

313311402 is a `hidden beast` number, since 313 + 311 + 40 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 209699361 + 103612041 = 14481^2 + 10179^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (313311407) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 966849 + ... + 967172.

Almost surely, 2^313311402 is an apocalyptic number.

313311402 is an abundant number, since it is smaller than the sum of its proper divisors (388738584).

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

313311402 is a wasteful number, since it uses less digits than its factorization.

313311402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934035 (or 1934026 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 313311402 is about 17700.6045659463. The cubic root of 313311402 is about 679.1912255856.

Adding to 313311402 its reverse (204113313), we get a palindrome (517424715).

It can be divided in two parts, 3133 and 11402, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 313311402 in words is "three hundred thirteen million, three hundred eleven thousand, four hundred two".