400031041013 has 2 divisors, whose sum is σ = 400031041014. Its totient is φ = 400031041012.

The previous prime is 400031040973. The next prime is 400031041043. The reversal of 400031041013 is 310140130004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297328097284 + 102702943729 = 545278^2 + 320473^2 .

It is a cyclic number.

It is not a de Polignac number, because 400031041013 - 2²⁴ = 400014263797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400031040982 and 400031041000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400031041043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200015520506 + 200015520507.

It is an arithmetic number, because the mean of its divisors is an integer number (200015520507).

Almost surely, 2^400031041013 is an apocalyptic number.

It is an amenable number.

400031041013 is a deficient number, since it is larger than the sum of its proper divisors (1).

400031041013 is an equidigital number, since it uses as much as digits as its factorization.

400031041013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 400031041013 its reverse (310140130004), we get a palindrome (710171171017).

The spelling of 400031041013 in words is "four hundred billion, thirty-one million, forty-one thousand, thirteen".