342631777 has 2 divisors, whose sum is σ = 342631778. Its totient is φ = 342631776.

The previous prime is 342631771. The next prime is 342631789. The reversal of 342631777 is 777136243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242611776 + 100020001 = 15576^2 + 10001^2 .

It is a cyclic number.

It is not a de Polignac number, because 342631777 - 2¹⁹ = 342107489 is a prime.

It is a super-2 number, since 2×342631777² = 234793069220355458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342631771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171315888 + 171315889.

It is an arithmetic number, because the mean of its divisors is an integer number (171315889).

Almost surely, 2^342631777 is an apocalyptic number.

It is an amenable number.

342631777 is a deficient number, since it is larger than the sum of its proper divisors (1).

342631777 is an equidigital number, since it uses as much as digits as its factorization.

342631777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 40.

The square root of 342631777 is about 18510.3154214076. The cubic root of 342631777 is about 699.7494184724.

The spelling of 342631777 in words is "three hundred forty-two million, six hundred thirty-one thousand, seven hundred seventy-seven".