183135531381 has 32 divisors (see below), whose sum is σ = 268252217856. Its totient is φ = 110213400000.

The previous prime is 183135531379. The next prime is 183135531437.

183135531381 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 183135531381 - 2¹ = 183135531379 is a prime.

It is a super-2 number, since 2×183135531381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183135531331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2708275 + ... + 2775071.

It is an arithmetic number, because the mean of its divisors is an integer number (8382881808).

Almost surely, 2^183135531381 is an apocalyptic number.

183135531381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

183135531381 is a deficient number, since it is larger than the sum of its proper divisors (85116686475).

183135531381 is a wasteful number, since it uses less digits than its factorization.

183135531381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67393.

The product of its digits is 129600, while the sum is 42.

The spelling of 183135531381 in words is "one hundred eighty-three billion, one hundred thirty-five million, five hundred thirty-one thousand, three hundred eighty-one".