31343539290 has 64 divisors (see below), whose sum is σ = 85998170880. Its totient is φ = 7161960960.

The previous prime is 31343539289. The next prime is 31343539291. The reversal of 31343539290 is 9293534313.

It is an interprime number because it is at equal distance from previous prime (31343539289) and next prime (31343539291).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (31343539291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 689670 + ... + 733710.

It is an arithmetic number, because the mean of its divisors is an integer number (1343721420).

Almost surely, 2^31343539290 is an apocalyptic number.

31343539290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31343539290 is an abundant number, since it is smaller than the sum of its proper divisors (54654631590).

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

31343539290 is a wasteful number, since it uses less digits than its factorization.

31343539290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47447.

The product of its (nonzero) digits is 262440, while the sum is 42.

The spelling of 31343539290 in words is "thirty-one billion, three hundred forty-three million, five hundred thirty-nine thousand, two hundred ninety".