31032145113450 has 192 divisors, whose sum is σ = 83411185509120. Its totient is φ = 7589794037760.

The previous prime is 31032145113397. The next prime is 31032145113451. The reversal of 31032145113450 is 5431154123013.

It is not an unprimeable number, because it can be changed into a prime (31032145113451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 309685956 + ... + 309786144.

It is an arithmetic number, because the mean of its divisors is an integer number (434433257860).

Almost surely, 2^{31032145113450} is an apocalyptic number.

31032145113450 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 31032145113450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41705592754560).

31032145113450 is an abundant number, since it is smaller than the sum of its proper divisors (52379040395670).

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

31032145113450 is a wasteful number, since it uses less digits than its factorization.

31032145113450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101233 (or 101228 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 31032145113450 its reverse (5431154123013), we get a palindrome (36463299236463).

The spelling of 31032145113450 in words is "thirty-one trillion, thirty-two billion, one hundred forty-five million, one hundred thirteen thousand, four hundred fifty".