31420976769 has 48 divisors (see below), whose sum is σ = 55881431424. Its totient is φ = 16567200000.

The previous prime is 31420976749. The next prime is 31420976791. The reversal of 31420976769 is 96767902413.

It is a happy number.

31420976769 is a `hidden beast` number, since 314 + 209 + 7 + 67 + 69 = 666.

It is not a de Polignac number, because 31420976769 - 2¹³ = 31420968577 is a prime.

It is a super-2 number, since 2×31420976769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31420976749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2656669 + ... + 2668469.

It is an arithmetic number, because the mean of its divisors is an integer number (1164196488).

Almost surely, 2^31420976769 is an apocalyptic number.

31420976769 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

31420976769 is a deficient number, since it is larger than the sum of its proper divisors (24460454655).

31420976769 is a wasteful number, since it uses less digits than its factorization.

31420976769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15078 (or 15075 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 31420976769 in words is "thirty-one billion, four hundred twenty million, nine hundred seventy-six thousand, seven hundred sixty-nine".