31381336001 has 2 divisors, whose sum is σ = 31381336002. Its totient is φ = 31381336000.

The previous prime is 31381335941. The next prime is 31381336013. The reversal of 31381336001 is 10063318313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31362639025 + 18696976 = 177095^2 + 4324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31381336001 is a prime.

It is not a weakly prime, because it can be changed into another prime (31381333001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15690668000 + 15690668001.

It is an arithmetic number, because the mean of its divisors is an integer number (15690668001).

Almost surely, 2^31381336001 is an apocalyptic number.

It is an amenable number.

31381336001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31381336001 is an equidigital number, since it uses as much as digits as its factorization.

31381336001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 31381336001 in words is "thirty-one billion, three hundred eighty-one million, three hundred thirty-six thousand, one".