312628281031 has 16 divisors (see below), whose sum is σ = 343484265600. Its totient is φ = 282184610400.

The previous prime is 312628281023. The next prime is 312628281059. The reversal of 312628281031 is 130182826213.

It is not a de Polignac number, because 312628281031 - 2³ = 312628281023 is a prime.

It is a super-2 number, since 2×312628281031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312628281001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811765 + ... + 1133233.

It is an arithmetic number, because the mean of its divisors is an integer number (21467766600).

Almost surely, 2^312628281031 is an apocalyptic number.

312628281031 is a deficient number, since it is larger than the sum of its proper divisors (30855984569).

312628281031 is a wasteful number, since it uses less digits than its factorization.

312628281031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322110.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 312628281031 in words is "three hundred twelve billion, six hundred twenty-eight million, two hundred eighty-one thousand, thirty-one".