151631285 has 32 divisors (see below), whose sum is σ = 204150240. Its totient is φ = 107347968.

The previous prime is 151631281. The next prime is 151631297. The reversal of 151631285 is 582136151.

151631285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 58354321 + 93276964 = 7639^2 + 9658^2 .

It is not a de Polignac number, because 151631285 - 2² = 151631281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151631281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 484289 + ... + 484601.

It is an arithmetic number, because the mean of its divisors is an integer number (6379695).

Almost surely, 2^151631285 is an apocalyptic number.

It is an amenable number.

151631285 is a deficient number, since it is larger than the sum of its proper divisors (52518955).

151631285 is a wasteful number, since it uses less digits than its factorization.

151631285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617.

The product of its digits is 7200, while the sum is 32.

The square root of 151631285 is about 12313.8655587918. The cubic root of 151631285 is about 533.2484541573.

The spelling of 151631285 in words is "one hundred fifty-one million, six hundred thirty-one thousand, two hundred eighty-five".