31923729063 has 12 divisors (see below), whose sum is σ = 46165870608. Its totient is φ = 21257647200.

The previous prime is 31923729053. The next prime is 31923729107. The reversal of 31923729063 is 36092732913.

31923729063 is a `hidden beast` number, since 3 + 192 + 372 + 90 + 6 + 3 = 666.

It is not a de Polignac number, because 31923729063 - 2¹⁷ = 31923597991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31923729023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2061763 + ... + 2077188.

It is an arithmetic number, because the mean of its divisors is an integer number (3847155884).

Almost surely, 2^31923729063 is an apocalyptic number.

31923729063 is a deficient number, since it is larger than the sum of its proper divisors (14242141545).

31923729063 is a wasteful number, since it uses less digits than its factorization.

31923729063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139814 (or 4139811 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The spelling of 31923729063 in words is "thirty-one billion, nine hundred twenty-three million, seven hundred twenty-nine thousand, sixty-three".