151831216 has 20 divisors (see below), whose sum is σ = 311477832. Its totient is φ = 71449856.

The previous prime is 151831213. The next prime is 151831217. The reversal of 151831216 is 612138151.

It is not an unprimeable number, because it can be changed into a prime (151831213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278830 + ... + 279373.

Almost surely, 2^151831216 is an apocalyptic number.

151831216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

151831216 is an abundant number, since it is smaller than the sum of its proper divisors (159646616).

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

151831216 is a wasteful number, since it uses less digits than its factorization.

151831216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558228 (or 558222 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 151831216 is about 12321.9810095617. The cubic root of 151831216 is about 533.4827199585.

Adding to 151831216 its reverse (612138151), we get a palindrome (763969367).

The spelling of 151831216 in words is "one hundred fifty-one million, eight hundred thirty-one thousand, two hundred sixteen".