1207856231 has 4 divisors (see below), whose sum is σ = 1240501032. Its totient is φ = 1175211432.

The previous prime is 1207856227. The next prime is 1207856249. The reversal of 1207856231 is 1326587021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1326587021 = 41 ⋅32355781.

It is a cyclic number.

It is not a de Polignac number, because 1207856231 - 2² = 1207856227 is a prime.

It is a super-2 number, since 2×1207856231² = 2917833349531050722, 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 = 1207856191 and 1207856200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200856231) 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, 16322345 + ... + 16322418.

It is an arithmetic number, because the mean of its divisors is an integer number (310125258).

Almost surely, 2^1207856231 is an apocalyptic number.

1207856231 is a deficient number, since it is larger than the sum of its proper divisors (32644801).

1207856231 is an equidigital number, since it uses as much as digits as its factorization.

1207856231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32644800.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1207856231 is about 34754.2260883479. The cubic root of 1207856231 is about 1064.9725520636.

The spelling of 1207856231 in words is "one billion, two hundred seven million, eight hundred fifty-six thousand, two hundred thirty-one".