131642023 has 4 divisors (see below), whose sum is σ = 133496208. Its totient is φ = 129787840.

The previous prime is 131642003. The next prime is 131642047. The reversal of 131642023 is 320246131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131642023 - 2⁹ = 131641511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131641985 and 131642003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131642003) 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, 926986 + ... + 927127.

It is an arithmetic number, because the mean of its divisors is an integer number (33374052).

Almost surely, 2^131642023 is an apocalyptic number.

131642023 is a deficient number, since it is larger than the sum of its proper divisors (1854185).

131642023 is an equidigital number, since it uses as much as digits as its factorization.

131642023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854184.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 131642023 is about 11473.5357671469. The cubic root of 131642023 is about 508.7036446967.

Adding to 131642023 its reverse (320246131), we get a palindrome (451888154).

The spelling of 131642023 in words is "one hundred thirty-one million, six hundred forty-two thousand, twenty-three".