312040251 has 12 divisors (see below), whose sum is σ = 455102128. Its totient is φ = 206006544.

The previous prime is 312040247. The next prime is 312040259. The reversal of 312040251 is 152040213.

It is not a de Polignac number, because 312040251 - 2² = 312040247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312040259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167380 + ... + 169233.

Almost surely, 2^312040251 is an apocalyptic number.

312040251 is a deficient number, since it is larger than the sum of its proper divisors (143061877).

312040251 is a wasteful number, since it uses less digits than its factorization.

312040251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336722 (or 336719 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 312040251 is about 17664.6610779828. The cubic root of 312040251 is about 678.2714539409.

Adding to 312040251 its reverse (152040213), we get a palindrome (464080464).

The spelling of 312040251 in words is "three hundred twelve million, forty thousand, two hundred fifty-one".