31353422490 has 384 divisors, whose sum is σ = 97238880000. Its totient is φ = 7249222656.

The previous prime is 31353422483. The next prime is 31353422533. The reversal of 31353422490 is 9422435313.

31353422490 is a `hidden beast` number, since 3 + 13 + 534 + 2 + 24 + 90 = 666.

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, 62832261 + ... + 62832759.

It is an arithmetic number, because the mean of its divisors is an integer number (253226250).

Almost surely, 2^31353422490 is an apocalyptic number.

31353422490 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 31353422490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48619440000).

31353422490 is an abundant number, since it is smaller than the sum of its proper divisors (65885457510).

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

31353422490 is a wasteful number, since it uses less digits than its factorization.

31353422490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 31353422490 in words is "thirty-one billion, three hundred fifty-three million, four hundred twenty-two thousand, four hundred ninety".