151278131 has 2 divisors, whose sum is σ = 151278132. Its totient is φ = 151278130.

The previous prime is 151278079. The next prime is 151278137. The reversal of 151278131 is 131872151.

It is a strong prime.

It is an emirp because it is prime and its reverse (131872151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151278131 is a prime.

It is a super-2 number, since 2×151278131² = 45770145837706322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 151278094 and 151278103.

It is not a weakly prime, because it can be changed into another prime (151278137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75639065 + 75639066.

It is an arithmetic number, because the mean of its divisors is an integer number (75639066).

Almost surely, 2^151278131 is an apocalyptic number.

151278131 is a deficient number, since it is larger than the sum of its proper divisors (1).

151278131 is an equidigital number, since it uses as much as digits as its factorization.

151278131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 29.

The square root of 151278131 is about 12299.5175108620. The cubic root of 151278131 is about 532.8341482437.

The spelling of 151278131 in words is "one hundred fifty-one million, two hundred seventy-eight thousand, one hundred thirty-one".