40631051 has 2 divisors, whose sum is σ = 40631052. Its totient is φ = 40631050.

The previous prime is 40631039. The next prime is 40631057. The reversal of 40631051 is 15013604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40631051 - 2¹⁴ = 40614667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40631057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20315525 + 20315526.

It is an arithmetic number, because the mean of its divisors is an integer number (20315526).

Almost surely, 2^40631051 is an apocalyptic number.

40631051 is a deficient number, since it is larger than the sum of its proper divisors (1).

40631051 is an equidigital number, since it uses as much as digits as its factorization.

40631051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 40631051 is about 6374.2490538102. The cubic root of 40631051 is about 343.7842836991.

Adding to 40631051 its reverse (15013604), we get a palindrome (55644655).

The spelling of 40631051 in words is "forty million, six hundred thirty-one thousand, fifty-one".