277378340231 has 4 divisors (see below), whose sum is σ = 277550733600. Its totient is φ = 277205946864.

The previous prime is 277378340227. The next prime is 277378340233. The reversal of 277378340231 is 132043873772.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 277378340231 - 2² = 277378340227 is a prime.

It is a super-2 number, since 2×277378340231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (277378340233) 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, 86194271 + ... + 86197488.

It is an arithmetic number, because the mean of its divisors is an integer number (69387683400).

Almost surely, 2^277378340231 is an apocalyptic number.

277378340231 is a deficient number, since it is larger than the sum of its proper divisors (172393369).

277378340231 is a wasteful number, since it uses less digits than its factorization.

277378340231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172393368.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 277378340231 in words is "two hundred seventy-seven billion, three hundred seventy-eight million, three hundred forty thousand, two hundred thirty-one".