312021123402 has 8 divisors (see below), whose sum is σ = 624042246816. Its totient is φ = 104007041132.

The previous prime is 312021123397. The next prime is 312021123439. The reversal of 312021123402 is 204321120213.

It is a sphenic number, since it is the product of 3 distinct primes.

312021123402 is an admirable number.

It is a super-2 number, since 2×312021123402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26001760278 + ... + 26001760289.

It is an arithmetic number, because the mean of its divisors is an integer number (78005280852).

Almost surely, 2^312021123402 is an apocalyptic number.

312021123402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

312021123402 is a wasteful number, since it uses less digits than its factorization.

312021123402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52003520572.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 312021123402 its reverse (204321120213), we get a palindrome (516342243615).

The spelling of 312021123402 in words is "three hundred twelve billion, twenty-one million, one hundred twenty-three thousand, four hundred two".