131206023 has 18 divisors (see below), whose sum is σ = 205222056. Its totient is φ = 80741232.

The previous prime is 131205989. The next prime is 131206037. The reversal of 131206023 is 320602131.

It is not a de Polignac number, because 131206023 - 2²¹ = 129108871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131205987 and 131206005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131206223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41611 + ... + 44652.

Almost surely, 2^131206023 is an apocalyptic number.

131206023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131206023 is a deficient number, since it is larger than the sum of its proper divisors (74016033).

131206023 is a wasteful number, since it uses less digits than its factorization.

131206023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86295 (or 86279 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131206023 is about 11454.5197629582. The cubic root of 131206023 is about 508.1414126224.

Adding to 131206023 its reverse (320602131), we get a palindrome (451808154).

The spelling of 131206023 in words is "one hundred thirty-one million, two hundred six thousand, twenty-three".