151431532 has 24 divisors (see below), whose sum is σ = 310252320. Its totient is φ = 63315840.

The previous prime is 151431503. The next prime is 151431551. The reversal of 151431532 is 235134151.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 151431497 and 151431506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64807 + ... + 67102.

It is an arithmetic number, because the mean of its divisors is an integer number (12927180).

Almost surely, 2^151431532 is an apocalyptic number.

It is an amenable number.

151431532 is an abundant number, since it is smaller than the sum of its proper divisors (158820788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151431532 is a wasteful number, since it uses less digits than its factorization.

151431532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131961 (or 131959 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 151431532 is about 12305.7519883996. The cubic root of 151431532 is about 533.0141911842.

Adding to 151431532 its reverse (235134151), we get a palindrome (386565683).

The spelling of 151431532 in words is "one hundred fifty-one million, four hundred thirty-one thousand, five hundred thirty-two".