31772134077 has 32 divisors (see below), whose sum is σ = 46377745920. Its totient is φ = 19278544320.

The previous prime is 31772134057. The next prime is 31772134087. The reversal of 31772134077 is 77043127713.

It is a happy number.

It is not a de Polignac number, because 31772134077 - 2¹⁴ = 31772117693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31772134007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43258 + ... + 255764.

It is an arithmetic number, because the mean of its divisors is an integer number (1449304560).

Almost surely, 2^31772134077 is an apocalyptic number.

It is an amenable number.

31772134077 is a deficient number, since it is larger than the sum of its proper divisors (14605611843).

31772134077 is a wasteful number, since it uses less digits than its factorization.

31772134077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212633.

The product of its (nonzero) digits is 172872, while the sum is 42.

The spelling of 31772134077 in words is "thirty-one billion, seven hundred seventy-two million, one hundred thirty-four thousand, seventy-seven".