131213123 has 8 divisors (see below), whose sum is σ = 140606928. Its totient is φ = 122005504.

The previous prime is 131213101. The next prime is 131213129. The reversal of 131213123 is 321312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131213123 - 2¹² = 131209027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131213129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45086 + ... + 47907.

It is an arithmetic number, because the mean of its divisors is an integer number (17575866).

Almost surely, 2^131213123 is an apocalyptic number.

131213123 is a deficient number, since it is larger than the sum of its proper divisors (9393805).

131213123 is an equidigital number, since it uses as much as digits as its factorization.

131213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93093.

The product of its digits is 108, while the sum is 17.

The square root of 131213123 is about 11454.8296800956. The cubic root of 131213123 is about 508.1505782050.

Adding to 131213123 its reverse (321312131), we get a palindrome (452525254).

The spelling of 131213123 in words is "one hundred thirty-one million, two hundred thirteen thousand, one hundred twenty-three".