361431157 has 2 divisors, whose sum is σ = 361431158. Its totient is φ = 361431156.

The previous prime is 361431151. The next prime is 361431199. The reversal of 361431157 is 751134163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360012676 + 1418481 = 18974^2 + 1191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361431157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361431151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180715578 + 180715579.

It is an arithmetic number, because the mean of its divisors is an integer number (180715579).

Almost surely, 2^361431157 is an apocalyptic number.

It is an amenable number.

361431157 is a deficient number, since it is larger than the sum of its proper divisors (1).

361431157 is an equidigital number, since it uses as much as digits as its factorization.

361431157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 361431157 is about 19011.3428510455. The cubic root of 361431157 is about 712.3200946005.

The spelling of 361431157 in words is "three hundred sixty-one million, four hundred thirty-one thousand, one hundred fifty-seven".