311603661343642 has 4 divisors (see below), whose sum is σ = 467405492015466. Its totient is φ = 155801830671820.

The previous prime is 311603661343633. The next prime is 311603661343691. The reversal of 311603661343642 is 246343166306113.

It is a happy number.

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., 289137682394401 + 22465978949241 = 17004049^2 + 4739829^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77900915335909 + ... + 77900915335912.

Almost surely, 2^{311603661343642} is an apocalyptic number.

311603661343642 is a deficient number, since it is larger than the sum of its proper divisors (155801830671824).

311603661343642 is a wasteful number, since it uses less digits than its factorization.

311603661343642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155801830671823.

The product of its (nonzero) digits is 3359232, while the sum is 49.

The spelling of 311603661343642 in words is "three hundred eleven trillion, six hundred three billion, six hundred sixty-one million, three hundred forty-three thousand, six hundred forty-two".