131201023 has 16 divisors (see below), whose sum is σ = 142080480. Its totient is φ = 120766464.

The previous prime is 131201009. The next prime is 131201029. The reversal of 131201023 is 320102131.

It is a cyclic number.

It is not a de Polignac number, because 131201023 - 2⁵ = 131200991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131200994 and 131201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113215 + ... + 114367.

It is an arithmetic number, because the mean of its divisors is an integer number (8880030).

Almost surely, 2^131201023 is an apocalyptic number.

131201023 is a deficient number, since it is larger than the sum of its proper divisors (10879457).

131201023 is a wasteful number, since it uses less digits than its factorization.

131201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131201023 is about 11454.3015064211. The cubic root of 131201023 is about 508.1349577883.

Adding to 131201023 its reverse (320102131), we get a palindrome (451303154).

The spelling of 131201023 in words is "one hundred thirty-one million, two hundred one thousand, twenty-three".