131663551031 has 4 divisors (see below), whose sum is σ = 131804068032. Its totient is φ = 131523034032.

The previous prime is 131663551027. The next prime is 131663551067. The reversal of 131663551031 is 130155366131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130155366131 = 7 ⋅18593623733.

It is a cyclic number.

It is not a de Polignac number, because 131663551031 - 2² = 131663551027 is a prime.

It is a super-3 number, since 3×131663551031³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131663550982 and 131663551000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131663551531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70257095 + ... + 70258968.

It is an arithmetic number, because the mean of its divisors is an integer number (32951017008).

Almost surely, 2^131663551031 is an apocalyptic number.

131663551031 is a deficient number, since it is larger than the sum of its proper divisors (140517001).

131663551031 is an equidigital number, since it uses as much as digits as its factorization.

131663551031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140517000.

The product of its (nonzero) digits is 24300, while the sum is 35.

The spelling of 131663551031 in words is "one hundred thirty-one billion, six hundred sixty-three million, five hundred fifty-one thousand, thirty-one".