151631133 has 4 divisors (see below), whose sum is σ = 202174848. Its totient is φ = 101087420.

The previous prime is 151631131. The next prime is 151631159. The reversal of 151631133 is 331136151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151631133 - 2¹ = 151631131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151631131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25271853 + ... + 25271858.

It is an arithmetic number, because the mean of its divisors is an integer number (50543712).

Almost surely, 2^151631133 is an apocalyptic number.

It is an amenable number.

151631133 is a deficient number, since it is larger than the sum of its proper divisors (50543715).

151631133 is an equidigital number, since it uses as much as digits as its factorization.

151631133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50543714.

The product of its digits is 810, while the sum is 24.

The square root of 151631133 is about 12313.8593868860. The cubic root of 151631133 is about 533.2482759755.

Adding to 151631133 its reverse (331136151), we get a palindrome (482767284).

The spelling of 151631133 in words is "one hundred fifty-one million, six hundred thirty-one thousand, one hundred thirty-three".