151431061 has 4 divisors (see below), whose sum is σ = 152034624. Its totient is φ = 150827500.

The previous prime is 151431041. The next prime is 151431067. The reversal of 151431061 is 160134151.

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, and also an emirpimes, since its reverse is a distinct semiprime: 160134151 = 41 ⋅3905711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151431061 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151431067) 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, 301405 + ... + 301906.

It is an arithmetic number, because the mean of its divisors is an integer number (38008656).

Almost surely, 2^151431061 is an apocalyptic number.

It is an amenable number.

151431061 is a deficient number, since it is larger than the sum of its proper divisors (603563).

151431061 is an equidigital number, since it uses as much as digits as its factorization.

151431061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603562.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 151431061 is about 12305.7328509927. The cubic root of 151431061 is about 533.0136385693.

The spelling of 151431061 in words is "one hundred fifty-one million, four hundred thirty-one thousand, sixty-one".