31311422142000 has 640 divisors, whose sum is σ = 135538632972288. Its totient is φ = 6005786112000.

The previous prime is 31311422141963. The next prime is 31311422142023. The reversal of 31311422142000 is 24122411313.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3399322 + ... + 8612678.

Almost surely, 2^{31311422142000} is an apocalyptic number.

31311422142000 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 31311422142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67769316486144).

31311422142000 is an abundant number, since it is smaller than the sum of its proper divisors (104227210830288).

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

31311422142000 is a wasteful number, since it uses less digits than its factorization.

31311422142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213414 (or 5213398 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 31311422142000 its reverse (24122411313), we get a palindrome (31335544553313).

The spelling of 31311422142000 in words is "thirty-one trillion, three hundred eleven billion, four hundred twenty-two million, one hundred forty-two thousand".