311156321263642 has 8 divisors (see below), whose sum is σ = 467002566037332. Its totient is φ = 155488799251200.

The previous prime is 311156321263633. The next prime is 311156321263657. The reversal of 311156321263642 is 246362123651113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 253832479558641 + 57323841705001 = 15932121^2 + 7571251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×311156321263642² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311156321263592 and 311156321263601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44680685959 + ... + 44680692922.

Almost surely, 2^{311156321263642} is an apocalyptic number.

311156321263642 is a deficient number, since it is larger than the sum of its proper divisors (155846244773690).

311156321263642 is a wasteful number, since it uses less digits than its factorization.

311156321263642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89361380624.

The product of its digits is 933120, while the sum is 46.

The spelling of 311156321263642 in words is "three hundred eleven trillion, one hundred fifty-six billion, three hundred twenty-one million, two hundred sixty-three thousand, six hundred forty-two".