13123255031434 has 4 divisors (see below), whose sum is σ = 19684882547154. Its totient is φ = 6561627515716.

The previous prime is 13123255031377. The next prime is 13123255031461. The reversal of 13123255031434 is 43413055232131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7720201175625 + 5403053855809 = 2778525^2 + 2324447^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13123255031393 and 13123255031402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280813757857 + ... + 3280813757860.

Almost surely, 2^{13123255031434} is an apocalyptic number.

13123255031434 is a deficient number, since it is larger than the sum of its proper divisors (6561627515720).

13123255031434 is an equidigital number, since it uses as much as digits as its factorization.

13123255031434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561627515719.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 13123255031434 in words is "thirteen trillion, one hundred twenty-three billion, two hundred fifty-five million, thirty-one thousand, four hundred thirty-four".