231046458778 has 4 divisors (see below), whose sum is σ = 346569688170. Its totient is φ = 115523229388.

The previous prime is 231046458757. The next prime is 231046458779. The reversal of 231046458778 is 877854640132.

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

It can be written as a sum of positive squares in only one way, i.e., 170332020369 + 60714438409 = 412713^2 + 246403^2 .

It is a super-2 number, since 2×231046458778² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231046458779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57761614693 + ... + 57761614696.

Almost surely, 2^231046458778 is an apocalyptic number.

231046458778 is a deficient number, since it is larger than the sum of its proper divisors (115523229392).

231046458778 is a wasteful number, since it uses less digits than its factorization.

231046458778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115523229391.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 231046458778 in words is "two hundred thirty-one billion, forty-six million, four hundred fifty-eight thousand, seven hundred seventy-eight".