13031041402 has 4 divisors (see below), whose sum is σ = 19546562106. Its totient is φ = 6515520700.

The previous prime is 13031041367. The next prime is 13031041421. The reversal of 13031041402 is 20414013031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20414013031 = 2777 ⋅7351103.

It can be written as a sum of positive squares in only one way, i.e., 9169786081 + 3861255321 = 95759^2 + 62139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13031041402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3257760349 + ... + 3257760352.

Almost surely, 2^13031041402 is an apocalyptic number.

13031041402 is a deficient number, since it is larger than the sum of its proper divisors (6515520704).

13031041402 is an equidigital number, since it uses as much as digits as its factorization.

13031041402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6515520703.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13031041402 its reverse (20414013031), we get a palindrome (33445054433).

The spelling of 13031041402 in words is "thirteen billion, thirty-one million, forty-one thousand, four hundred two".