131154022231 has 4 divisors (see below), whose sum is σ = 134352900864. Its totient is φ = 127955143600.

The previous prime is 131154022199. The next prime is 131154022247. The reversal of 131154022231 is 132220451131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132220451131 = 102701 ⋅1287431.

It is a cyclic number.

It is not a de Polignac number, because 131154022231 - 2⁵ = 131154022199 is a prime.

It is a super-2 number, since 2×131154022231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131154022196 and 131154022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131154026231) 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, 1599439255 + ... + 1599439336.

It is an arithmetic number, because the mean of its divisors is an integer number (33588225216).

Almost surely, 2^131154022231 is an apocalyptic number.

131154022231 is a deficient number, since it is larger than the sum of its proper divisors (3198878633).

131154022231 is an equidigital number, since it uses as much as digits as its factorization.

131154022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198878632.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 131154022231 its reverse (132220451131), we get a palindrome (263374473362).

The spelling of 131154022231 in words is "one hundred thirty-one billion, one hundred fifty-four million, twenty-two thousand, two hundred thirty-one".