31231848690 has 384 divisors, whose sum is σ = 106792058880. Its totient is φ = 6158592000.

The previous prime is 31231848647. The next prime is 31231848743. The reversal of 31231848690 is 9684813213.

It is a super-2 number, since 2×31231848690² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6305715 + ... + 6310665.

It is an arithmetic number, because the mean of its divisors is an integer number (278104320).

Almost surely, 2^31231848690 is an apocalyptic number.

31231848690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31231848690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53396029440).

31231848690 is an abundant number, since it is smaller than the sum of its proper divisors (75560210190).

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

31231848690 is a wasteful number, since it uses less digits than its factorization.

31231848690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038 (or 5035 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 31231848690 in words is "thirty-one billion, two hundred thirty-one million, eight hundred forty-eight thousand, six hundred ninety".