31143003431 has 8 divisors (see below), whose sum is σ = 31184162400. Its totient is φ = 31101870240.

The previous prime is 31143003389. The next prime is 31143003457. The reversal of 31143003431 is 13430034113.

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 31143003431 - 2³⁴ = 13963134247 is a prime.

It is a super-2 number, since 2×31143003431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31143003397 and 31143003406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143003131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3676541 + ... + 3685001.

It is an arithmetic number, because the mean of its divisors is an integer number (3898020300).

Almost surely, 2^31143003431 is an apocalyptic number.

31143003431 is a deficient number, since it is larger than the sum of its proper divisors (41158969).

31143003431 is a wasteful number, since it uses less digits than its factorization.

31143003431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12889.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31143003431 its reverse (13430034113), we get a palindrome (44573037544).

The spelling of 31143003431 in words is "thirty-one billion, one hundred forty-three million, three thousand, four hundred thirty-one".