39380487631 has 2 divisors, whose sum is σ = 39380487632. Its totient is φ = 39380487630.

The previous prime is 39380487547. The next prime is 39380487667. The reversal of 39380487631 is 13678408393.

It is a happy number.

39380487631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39380487631 - 2⁹ = 39380487119 is a prime.

It is a super-2 number, since 2×39380487631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39380487431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19690243815 + 19690243816.

It is an arithmetic number, because the mean of its divisors is an integer number (19690243816).

Almost surely, 2^39380487631 is an apocalyptic number.

39380487631 is a deficient number, since it is larger than the sum of its proper divisors (1).

39380487631 is an equidigital number, since it uses as much as digits as its factorization.

39380487631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 39380487631 in words is "thirty-nine billion, three hundred eighty million, four hundred eighty-seven thousand, six hundred thirty-one".