151531972 has 12 divisors (see below), whose sum is σ = 266808976. Its totient is φ = 75300840.

The previous prime is 151531969. The next prime is 151531987. The reversal of 151531972 is 279135151.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115554 + ... + 116857.

Almost surely, 2^151531972 is an apocalyptic number.

It is an amenable number.

151531972 is a deficient number, since it is larger than the sum of its proper divisors (115277004).

151531972 is a wasteful number, since it uses less digits than its factorization.

151531972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232578 (or 232576 counting only the distinct ones).

The product of its digits is 9450, while the sum is 34.

The square root of 151531972 is about 12309.8323302960. The cubic root of 151531972 is about 533.1320092563.

The spelling of 151531972 in words is "one hundred fifty-one million, five hundred thirty-one thousand, nine hundred seventy-two".