13156319401 has 9 divisors (see below), whose sum is σ = 13755961821. Its totient is φ = 12581782092.

The previous prime is 13156319381. The next prime is 13156319413. The reversal of 13156319401 is 10491365131.

The square root of 13156319401 is 114701.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 13156319401 - 2¹¹ = 13156317353 is a prime.

It is a super-2 number, since 2×13156319401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13156319461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2635630 + ... + 2640616.

Almost surely, 2^13156319401 is an apocalyptic number.

13156319401 is the 114701-st square number.

13156319401 is the 57351-st centered octagonal number.

It is an amenable number.

13156319401 is a deficient number, since it is larger than the sum of its proper divisors (599642420).

13156319401 is an frugal number, since it uses more digits than its factorization.

13156319401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020 (or 5010 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 13156319401 in words is "thirteen billion, one hundred fifty-six million, three hundred nineteen thousand, four hundred one".