131403112665 has 32 divisors (see below), whose sum is σ = 230897520000. Its totient is φ = 63283000320.

The previous prime is 131403112619. The next prime is 131403112727. The reversal of 131403112665 is 566211304131.

It is a happy number.

It is not a de Polignac number, because 131403112665 - 2⁹ = 131403112153 is a prime.

It is a super-4 number, since 4×131403112665⁴ (a number of 46 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2647840 + ... + 2697009.

It is an arithmetic number, because the mean of its divisors is an integer number (7215547500).

Almost surely, 2^131403112665 is an apocalyptic number.

131403112665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131403112665 is a deficient number, since it is larger than the sum of its proper divisors (99494407335).

131403112665 is a wasteful number, since it uses less digits than its factorization.

131403112665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345017.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 131403112665 its reverse (566211304131), we get a palindrome (697614416796).

The spelling of 131403112665 in words is "one hundred thirty-one billion, four hundred three million, one hundred twelve thousand, six hundred sixty-five".