131223329 has 8 divisors (see below), whose sum is σ = 141499680. Its totient is φ = 121284000.

The previous prime is 131223317. The next prime is 131223361. The reversal of 131223329 is 923322131.

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 131223329 - 2¹² = 131219233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131223298 and 131223307.

It is not an unprimeable number, because it can be changed into a prime (131223929) 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, 83447 + ... + 85004.

It is an arithmetic number, because the mean of its divisors is an integer number (17687460).

Almost surely, 2^131223329 is an apocalyptic number.

131223329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131223329 is a deficient number, since it is larger than the sum of its proper divisors (10276351).

131223329 is a wasteful number, since it uses less digits than its factorization.

131223329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168511.

The product of its digits is 1944, while the sum is 26.

The square root of 131223329 is about 11455.2751603792. The cubic root of 131223329 is about 508.1637528282.

The spelling of 131223329 in words is "one hundred thirty-one million, two hundred twenty-three thousand, three hundred twenty-nine".