13155420131 has 8 divisors (see below), whose sum is σ = 15919164000. Its totient is φ = 10612775808.

The previous prime is 13155420119. The next prime is 13155420139. The reversal of 13155420131 is 13102455131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13155420131 is a prime.

It is a super-2 number, since 2×13155420131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13155420131.

It is not an unprimeable number, because it can be changed into a prime (13155420139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55274756 + ... + 55274993.

It is an arithmetic number, because the mean of its divisors is an integer number (1989895500).

Almost surely, 2^13155420131 is an apocalyptic number.

13155420131 is a deficient number, since it is larger than the sum of its proper divisors (2763743869).

13155420131 is a wasteful number, since it uses less digits than its factorization.

13155420131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110549773.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 13155420131 its reverse (13102455131), we get a palindrome (26257875262).

The spelling of 13155420131 in words is "thirteen billion, one hundred fifty-five million, four hundred twenty thousand, one hundred thirty-one".