31542134340 has 48 divisors (see below), whose sum is σ = 88540506432. Its totient is φ = 8390042496.

The previous prime is 31542134333. The next prime is 31542134359. The reversal of 31542134340 is 4343124513.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31542134298 and 31542134307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638274 + ... + 685913.

It is an arithmetic number, because the mean of its divisors is an integer number (1844593884).

Almost surely, 2^31542134340 is an apocalyptic number.

31542134340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31542134340 is an abundant number, since it is smaller than the sum of its proper divisors (56998372092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31542134340 is a wasteful number, since it uses less digits than its factorization.

31542134340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324596 (or 1324594 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 31542134340 its reverse (4343124513), we get a palindrome (35885258853).

The spelling of 31542134340 in words is "thirty-one billion, five hundred forty-two million, one hundred thirty-four thousand, three hundred forty".