1023100331240 has 128 divisors (see below), whose sum is σ = 2504928706560. Its totient is φ = 373832008704.

The previous prime is 1023100331233. The next prime is 1023100331249. The reversal of 1023100331240 is 421330013201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1023100331249) 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, 26198369 + ... + 26237391.

It is an arithmetic number, because the mean of its divisors is an integer number (19569755520).

Almost surely, 2^{1023100331240} is an apocalyptic number.

1023100331240 is a gapful number since it is divisible by the number (10) 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 1023100331240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252464353280).

1023100331240 is an abundant number, since it is smaller than the sum of its proper divisors (1481828375320).

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

1023100331240 is a wasteful number, since it uses less digits than its factorization.

1023100331240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39571 (or 39567 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1023100331240 its reverse (421330013201), we get a palindrome (1444430344441).

The spelling of 1023100331240 in words is "one trillion, twenty-three billion, one hundred million, three hundred thirty-one thousand, two hundred forty".