920885131 has 2 divisors, whose sum is σ = 920885132. Its totient is φ = 920885130.

The previous prime is 920885129. The next prime is 920885137. The reversal of 920885131 is 131588029.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 920885131 - 2¹ = 920885129 is a prime.

It is a super-2 number, since 2×920885131² = 1696058848993774322, which contains 22 as substring.

Together with 920885129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (920885137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460442565 + 460442566.

It is an arithmetic number, because the mean of its divisors is an integer number (460442566).

Almost surely, 2^920885131 is an apocalyptic number.

920885131 is a deficient number, since it is larger than the sum of its proper divisors (1).

920885131 is an equidigital number, since it uses as much as digits as its factorization.

920885131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 920885131 is about 30346.0892208535. The cubic root of 920885131 is about 972.9006351274.

The spelling of 920885131 in words is "nine hundred twenty million, eight hundred eighty-five thousand, one hundred thirty-one".