40931131 has 2 divisors, whose sum is σ = 40931132. Its totient is φ = 40931130.

The previous prime is 40931119. The next prime is 40931147. The reversal of 40931131 is 13113904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40931131 - 2¹³ = 40922939 is a prime.

It is a super-2 number, since 2×40931131² = 3350714969878322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40931101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20465565 + 20465566.

It is an arithmetic number, because the mean of its divisors is an integer number (20465566).

Almost surely, 2^40931131 is an apocalyptic number.

40931131 is a deficient number, since it is larger than the sum of its proper divisors (1).

40931131 is an equidigital number, since it uses as much as digits as its factorization.

40931131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 40931131 is about 6397.7442118297. The cubic root of 40931131 is about 344.6285465080.

The spelling of 40931131 in words is "forty million, nine hundred thirty-one thousand, one hundred thirty-one".