151561131 has 8 divisors (see below), whose sum is σ = 202964880. Its totient is φ = 100599072.

The previous prime is 151561127. The next prime is 151561153. The reversal of 151561131 is 131165151.

It is a happy number.

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

It is not a de Polignac number, because 151561131 - 2² = 151561127 is a prime.

It is a super-2 number, since 2×151561131² = 45941552859998322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151561181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109620 + ... + 110993.

It is an arithmetic number, because the mean of its divisors is an integer number (25370610).

Almost surely, 2^151561131 is an apocalyptic number.

151561131 is a deficient number, since it is larger than the sum of its proper divisors (51403749).

151561131 is a wasteful number, since it uses less digits than its factorization.

151561131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220845.

The product of its digits is 450, while the sum is 24.

The square root of 151561131 is about 12311.0166517636. The cubic root of 151561131 is about 533.1662035785.

The spelling of 151561131 in words is "one hundred fifty-one million, five hundred sixty-one thousand, one hundred thirty-one".