120913523 has 4 divisors (see below), whose sum is σ = 120943848. Its totient is φ = 120883200.

The previous prime is 120913519. The next prime is 120913543. The reversal of 120913523 is 325319021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325319021 = 17 ⋅19136413.

It is a cyclic number.

It is not a de Polignac number, because 120913523 - 2² = 120913519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120913492 and 120913501.

It is not an unprimeable number, because it can be changed into a prime (120913543) 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, 8078 + ... + 17523.

It is an arithmetic number, because the mean of its divisors is an integer number (30235962).

Almost surely, 2^120913523 is an apocalyptic number.

120913523 is a deficient number, since it is larger than the sum of its proper divisors (30325).

120913523 is an equidigital number, since it uses as much as digits as its factorization.

120913523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30324.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 120913523 is about 10996.0685247046. The cubic root of 120913523 is about 494.4908862697.

The spelling of 120913523 in words is "one hundred twenty million, nine hundred thirteen thousand, five hundred twenty-three".