312631214 has 16 divisors (see below), whose sum is σ = 536334048. Its totient is φ = 133886112.

The previous prime is 312631213. The next prime is 312631217. The reversal of 312631214 is 412136213.

It is a super-2 number, since 2×312631214² = 195476551934227592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312631214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312631211) 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, 13424 + ... + 28380.

It is an arithmetic number, because the mean of its divisors is an integer number (33520878).

Almost surely, 2^312631214 is an apocalyptic number.

312631214 is a deficient number, since it is larger than the sum of its proper divisors (223702834).

312631214 is a wasteful number, since it uses less digits than its factorization.

312631214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16459.

The product of its digits is 864, while the sum is 23.

The square root of 312631214 is about 17681.3804325341. The cubic root of 312631214 is about 678.6993694166.

Adding to 312631214 its reverse (412136213), we get a palindrome (724767427).

The spelling of 312631214 in words is "three hundred twelve million, six hundred thirty-one thousand, two hundred fourteen".