31077065506 has 4 divisors (see below), whose sum is σ = 46615598262. Its totient is φ = 15538532752.

The previous prime is 31077065501. The next prime is 31077065507. The reversal of 31077065506 is 60556077013.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60556077013 = 22147 ⋅2734279.

It can be written as a sum of positive squares in only one way, i.e., 31044678025 + 32387481 = 176195^2 + 5691^2 .

It is not an unprimeable number, because it can be changed into a prime (31077065501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7769266375 + ... + 7769266378.

Almost surely, 2^31077065506 is an apocalyptic number.

31077065506 is a deficient number, since it is larger than the sum of its proper divisors (15538532756).

31077065506 is a wasteful number, since it uses less digits than its factorization.

31077065506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15538532755.

The product of its (nonzero) digits is 132300, while the sum is 40.

The spelling of 31077065506 in words is "thirty-one billion, seventy-seven million, sixty-five thousand, five hundred six".