158351631 has 8 divisors (see below), whose sum is σ = 212083200. Its totient is φ = 105093912.

The previous prime is 158351593. The next prime is 158351639. The reversal of 158351631 is 136153851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158351631 - 2¹⁵ = 158318863 is a prime.

It is a super-2 number, since 2×158351631² = 50150478080720322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 158351592 and 158351601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158351639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117681 + ... + 119018.

It is an arithmetic number, because the mean of its divisors is an integer number (26510400).

Almost surely, 2^158351631 is an apocalyptic number.

158351631 is a deficient number, since it is larger than the sum of its proper divisors (53731569).

158351631 is a wasteful number, since it uses less digits than its factorization.

158351631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236925.

The product of its digits is 10800, while the sum is 33.

The square root of 158351631 is about 12583.7844466599. The cubic root of 158351631 is about 541.0127667272.

The spelling of 158351631 in words is "one hundred fifty-eight million, three hundred fifty-one thousand, six hundred thirty-one".