151013281 has 4 divisors (see below), whose sum is σ = 152508564. Its totient is φ = 149518000.

The previous prime is 151013267. The next prime is 151013297. The reversal of 151013281 is 182310151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92948881 + 58064400 = 9641^2 + 7620^2 .

It is a cyclic number.

It is not a de Polignac number, because 151013281 - 2⁵ = 151013249 is a prime.

It is a super-2 number, since 2×151013281² = 45610022076769922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151013221) 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, 747490 + ... + 747691.

It is an arithmetic number, because the mean of its divisors is an integer number (38127141).

Almost surely, 2^151013281 is an apocalyptic number.

It is an amenable number.

151013281 is a deficient number, since it is larger than the sum of its proper divisors (1495283).

151013281 is a wasteful number, since it uses less digits than its factorization.

151013281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495282.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 151013281 is about 12288.7461117886. The cubic root of 151013281 is about 532.5230136923.

The spelling of 151013281 in words is "one hundred fifty-one million, thirteen thousand, two hundred eighty-one".