31421310423000 has 128 divisors (see below), whose sum is σ = 98067872448000. Its totient is φ = 8376162787200.

The previous prime is 31421310422951. The next prime is 31421310423007. The reversal of 31421310423000 is 32401312413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421310423007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7035141 + ... + 10598859.

It is an arithmetic number, because the mean of its divisors is an integer number (766155253500).

Almost surely, 2^{31421310423000} is an apocalyptic number.

31421310423000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31421310423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49033936224000).

31421310423000 is an abundant number, since it is smaller than the sum of its proper divisors (66646562025000).

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

31421310423000 is a wasteful number, since it uses less digits than its factorization.

31421310423000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566682 (or 3566668 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31421310423000 its reverse (32401312413), we get a palindrome (31453711735413).

The spelling of 31421310423000 in words is "thirty-one trillion, four hundred twenty-one billion, three hundred ten million, four hundred twenty-three thousand".