151316631 has 6 divisors (see below), whose sum is σ = 218568480. Its totient is φ = 100877748.

The previous prime is 151316629. The next prime is 151316657. The reversal of 151316631 is 136613151.

151316631 is a `hidden beast` number, since 1 + 5 + 13 + 16 + 631 = 666.

It is not a de Polignac number, because 151316631 - 2¹ = 151316629 is a prime.

It is a super-2 number, since 2×151316631² = 45793445634380322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151316595 and 151316604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151316531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8406471 + ... + 8406488.

It is an arithmetic number, because the mean of its divisors is an integer number (36428080).

Almost surely, 2^151316631 is an apocalyptic number.

151316631 is a deficient number, since it is larger than the sum of its proper divisors (67251849).

151316631 is a wasteful number, since it uses less digits than its factorization.

151316631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16812965 (or 16812962 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 151316631 is about 12301.0825133400. The cubic root of 151316631 is about 532.8793461727.

Adding to 151316631 its reverse (136613151), we get a palindrome (287929782).

The spelling of 151316631 in words is "one hundred fifty-one million, three hundred sixteen thousand, six hundred thirty-one".