31405132143 has 24 divisors (see below), whose sum is σ = 56556429696. Its totient is φ = 16314354000.

The previous prime is 31405132103. The next prime is 31405132177. The reversal of 31405132143 is 34123150413.

It is a happy number.

31405132143 is a `hidden beast` number, since 3 + 1 + 4 + 0 + 513 + 2 + 143 = 666.

It is not a de Polignac number, because 31405132143 - 2⁹ = 31405131631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31405132103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22658133 + ... + 22659518.

It is an arithmetic number, because the mean of its divisors is an integer number (2356517904).

Almost surely, 2^31405132143 is an apocalyptic number.

31405132143 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31405132143 is a deficient number, since it is larger than the sum of its proper divisors (25151297553).

31405132143 is a wasteful number, since it uses less digits than its factorization.

31405132143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45317675 (or 45317672 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 31405132143 its reverse (34123150413), we get a palindrome (65528282556).

The spelling of 31405132143 in words is "thirty-one billion, four hundred five million, one hundred thirty-two thousand, one hundred forty-three".