151291031 has 6 divisors (see below), whose sum is σ = 152814096. Its totient is φ = 149783000.

The previous prime is 151291027. The next prime is 151291037. The reversal of 151291031 is 130192151.

It is not a de Polignac number, because 151291031 - 2² = 151291027 is a prime.

It is a super-2 number, since 2×151291031² = 45777952122085922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151290988 and 151291006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151291037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2786 + ... + 17616.

It is an arithmetic number, because the mean of its divisors is an integer number (25469016).

Almost surely, 2^151291031 is an apocalyptic number.

151291031 is a deficient number, since it is larger than the sum of its proper divisors (1523065).

151291031 is an equidigital number, since it uses as much as digits as its factorization.

151291031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15033 (or 14932 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 151291031 is about 12300.0419104977. The cubic root of 151291031 is about 532.8492933390.

The spelling of 151291031 in words is "one hundred fifty-one million, two hundred ninety-one thousand, thirty-one".