31143000423 has 8 divisors (see below), whose sum is σ = 41671773936. Its totient is φ = 20688113600.

The previous prime is 31143000409. The next prime is 31143000433. The reversal of 31143000423 is 32400034113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31143000423 - 2⁴ = 31143000407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31143000423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143000433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18470688 + ... + 18472373.

It is an arithmetic number, because the mean of its divisors is an integer number (5208971742).

Almost surely, 2^31143000423 is an apocalyptic number.

31143000423 is a deficient number, since it is larger than the sum of its proper divisors (10528773513).

31143000423 is a wasteful number, since it uses less digits than its factorization.

31143000423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36943345.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31143000423 its reverse (32400034113), we get a palindrome (63543034536).

The spelling of 31143000423 in words is "thirty-one billion, one hundred forty-three million, four hundred twenty-three", and thus it is an aban number.