312421031 has 8 divisors (see below), whose sum is σ = 348055680. Its totient is φ = 278443872.

The previous prime is 312421027. The next prime is 312421033. The reversal of 312421031 is 130124213.

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

It is a cyclic number.

It is not a de Polignac number, because 312421031 - 2² = 312421027 is a prime.

It is a super-2 number, since 2×312421031² = 195213801222205922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312421033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413975 + ... + 414728.

It is an arithmetic number, because the mean of its divisors is an integer number (43506960).

Almost surely, 2^312421031 is an apocalyptic number.

312421031 is a deficient number, since it is larger than the sum of its proper divisors (35634649).

312421031 is a wasteful number, since it uses less digits than its factorization.

312421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828745.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312421031 is about 17675.4358079228. The cubic root of 312421031 is about 678.5472380412.

Adding to 312421031 its reverse (130124213), we get a palindrome (442545244).

The spelling of 312421031 in words is "three hundred twelve million, four hundred twenty-one thousand, thirty-one".