361142531 has 2 divisors, whose sum is σ = 361142532. Its totient is φ = 361142530.

The previous prime is 361142489. The next prime is 361142581. The reversal of 361142531 is 135241163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 361142531 - 2¹⁴ = 361126147 is a prime.

It is a super-2 number, since 2×361142531² = 260847855394171922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 361142531.

It is not a weakly prime, because it can be changed into another prime (361142581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180571265 + 180571266.

It is an arithmetic number, because the mean of its divisors is an integer number (180571266).

Almost surely, 2^361142531 is an apocalyptic number.

361142531 is a deficient number, since it is larger than the sum of its proper divisors (1).

361142531 is an equidigital number, since it uses as much as digits as its factorization.

361142531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 361142531 is about 19003.7504456357. The cubic root of 361142531 is about 712.1304329857.

Adding to 361142531 its reverse (135241163), we get a palindrome (496383694).

The spelling of 361142531 in words is "three hundred sixty-one million, one hundred forty-two thousand, five hundred thirty-one".