120947531 has 2 divisors, whose sum is σ = 120947532. Its totient is φ = 120947530.

The previous prime is 120947509. The next prime is 120947569. The reversal of 120947531 is 135749021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120947531 is a prime.

It is a super-2 number, since 2×120947531² = 29256610509991922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120947131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60473765 + 60473766.

It is an arithmetic number, because the mean of its divisors is an integer number (60473766).

Almost surely, 2^120947531 is an apocalyptic number.

120947531 is a deficient number, since it is larger than the sum of its proper divisors (1).

120947531 is an equidigital number, since it uses as much as digits as its factorization.

120947531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 120947531 is about 10997.6147868526. The cubic root of 120947531 is about 494.5372419055.

The spelling of 120947531 in words is "one hundred twenty million, nine hundred forty-seven thousand, five hundred thirty-one".