120315203231 has 4 divisors (see below), whose sum is σ = 120537597864. Its totient is φ = 120092808600.

The previous prime is 120315203179. The next prime is 120315203233. The reversal of 120315203231 is 132302513021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120315203231 is a prime.

It is a super-2 number, since 2×120315203231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120315203197 and 120315203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120315203233) 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, 111196505 + ... + 111197586.

It is an arithmetic number, because the mean of its divisors is an integer number (30134399466).

Almost surely, 2^120315203231 is an apocalyptic number.

120315203231 is a deficient number, since it is larger than the sum of its proper divisors (222394633).

120315203231 is an equidigital number, since it uses as much as digits as its factorization.

120315203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222394632.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 120315203231 its reverse (132302513021), we get a palindrome (252617716252).

The spelling of 120315203231 in words is "one hundred twenty billion, three hundred fifteen million, two hundred three thousand, two hundred thirty-one".