628087031 has 8 divisors (see below), whose sum is σ = 737892624. Its totient is φ = 527065920.

The previous prime is 628087007. The next prime is 628087073. The reversal of 628087031 is 130780826.

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 628087031 - 2¹⁰ = 628086007 is a prime.

It is a super-2 number, since 2×628087031² = 788986637020789922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 628086982 and 628087000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628087091) 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, 2195966 + ... + 2196251.

It is an arithmetic number, because the mean of its divisors is an integer number (92236578).

Almost surely, 2^628087031 is an apocalyptic number.

628087031 is a deficient number, since it is larger than the sum of its proper divisors (109805593).

628087031 is a wasteful number, since it uses less digits than its factorization.

628087031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392241.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 628087031 is about 25061.6645696171. The cubic root of 628087031 is about 856.3933284070.

The spelling of 628087031 in words is "six hundred twenty-eight million, eighty-seven thousand, thirty-one".