313597642 has 4 divisors (see below), whose sum is σ = 470396466. Its totient is φ = 156798820.

The previous prime is 313597631. The next prime is 313597649. The reversal of 313597642 is 246795313.

It is a happy number.

313597642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 285305881 + 28291761 = 16891^2 + 5319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313597595 and 313597604.

It is not an unprimeable number, because it can be changed into a prime (313597649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78399409 + ... + 78399412.

Almost surely, 2^313597642 is an apocalyptic number.

313597642 is a deficient number, since it is larger than the sum of its proper divisors (156798824).

313597642 is a wasteful number, since it uses less digits than its factorization.

313597642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156798823.

The product of its digits is 136080, while the sum is 40.

The square root of 313597642 is about 17708.6883195792. The cubic root of 313597642 is about 679.3979980603.

The spelling of 313597642 in words is "three hundred thirteen million, five hundred ninety-seven thousand, six hundred forty-two".