120767517231 has 4 divisors (see below), whose sum is σ = 161023356312. Its totient is φ = 80511678152.

The previous prime is 120767517229. The next prime is 120767517239. The reversal of 120767517231 is 132715767021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132715767021 = 3 ⋅44238589007.

It is a cyclic number.

It is not a de Polignac number, because 120767517231 - 2¹ = 120767517229 is a prime.

It is a super-2 number, since 2×120767517231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120767517239) 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, 20127919536 + ... + 20127919541.

It is an arithmetic number, because the mean of its divisors is an integer number (40255839078).

Almost surely, 2^120767517231 is an apocalyptic number.

120767517231 is a deficient number, since it is larger than the sum of its proper divisors (40255839081).

120767517231 is an equidigital number, since it uses as much as digits as its factorization.

120767517231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40255839080.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 120767517231 in words is "one hundred twenty billion, seven hundred sixty-seven million, five hundred seventeen thousand, two hundred thirty-one".