312424132220402 has 4 divisors (see below), whose sum is σ = 468636198330606. Its totient is φ = 156212066110200.

The previous prime is 312424132220363. The next prime is 312424132220411. The reversal of 312424132220402 is 204022231424213.

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., 250581966507961 + 61842165712441 = 15829781^2 + 7863979^2 .

It is a super-2 number, since 2×312424132220402² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78106033055099 + ... + 78106033055102.

Almost surely, 2^{312424132220402} is an apocalyptic number.

312424132220402 is a deficient number, since it is larger than the sum of its proper divisors (156212066110204).

312424132220402 is a wasteful number, since it uses less digits than its factorization.

312424132220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156212066110203.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 312424132220402 its reverse (204022231424213), we get a palindrome (516446363644615).

The spelling of 312424132220402 in words is "three hundred twelve trillion, four hundred twenty-four billion, one hundred thirty-two million, two hundred twenty thousand, four hundred two".