13455312531 has 8 divisors (see below), whose sum is σ = 17946842064. Its totient is φ = 8966995680.

The previous prime is 13455312511. The next prime is 13455312551. The reversal of 13455312531 is 13521355431.

It is an interprime number because it is at equal distance from previous prime (13455312511) and next prime (13455312551).

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

It is not a de Polignac number, because 13455312531 - 2⁵ = 13455312499 is a prime.

It is a super-2 number, since 2×13455312531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13455312492 and 13455312501.

It is not an unprimeable number, because it can be changed into a prime (13455312511) 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, 793380 + ... + 810161.

It is an arithmetic number, because the mean of its divisors is an integer number (2243355258).

Almost surely, 2^13455312531 is an apocalyptic number.

13455312531 is a deficient number, since it is larger than the sum of its proper divisors (4491529533).

13455312531 is a wasteful number, since it uses less digits than its factorization.

13455312531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606341.

The product of its digits is 27000, while the sum is 33.

Adding to 13455312531 its reverse (13521355431), we get a palindrome (26976667962).

The spelling of 13455312531 in words is "thirteen billion, four hundred fifty-five million, three hundred twelve thousand, five hundred thirty-one".