122713531 has 8 divisors (see below), whose sum is σ = 134123904. Its totient is φ = 111768960.

The previous prime is 122713519. The next prime is 122713537. The reversal of 122713531 is 135317221.

It is a happy number.

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 122713531 - 2⁷ = 122713403 is a prime.

It is a super-2 number, since 2×122713531² = 30117221380975922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122713496 and 122713505.

It is not an unprimeable number, because it can be changed into a prime (122713537) 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, 115900 + ... + 116953.

It is an arithmetic number, because the mean of its divisors is an integer number (16765488).

Almost surely, 2^122713531 is an apocalyptic number.

122713531 is a deficient number, since it is larger than the sum of its proper divisors (11410373).

122713531 is a wasteful number, since it uses less digits than its factorization.

122713531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232901.

The product of its digits is 1260, while the sum is 25.

The square root of 122713531 is about 11077.6139578882. The cubic root of 122713531 is about 496.9325952038.

The spelling of 122713531 in words is "one hundred twenty-two million, seven hundred thirteen thousand, five hundred thirty-one".