277311142 has 4 divisors (see below), whose sum is σ = 415966716. Its totient is φ = 138655570.

The previous prime is 277311131. The next prime is 277311143. The reversal of 277311142 is 241113772.

277311142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 277311142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (277311143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69327784 + ... + 69327787.

It is an arithmetic number, because the mean of its divisors is an integer number (103991679).

Almost surely, 2^277311142 is an apocalyptic number.

277311142 is a deficient number, since it is larger than the sum of its proper divisors (138655574).

277311142 is a wasteful number, since it uses less digits than its factorization.

277311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138655573.

The product of its digits is 2352, while the sum is 28.

The square root of 277311142 is about 16652.6617091683. The cubic root of 277311142 is about 652.1123719523.

The spelling of 277311142 in words is "two hundred seventy-seven million, three hundred eleven thousand, one hundred forty-two".