1023203031000 has 128 divisors (see below), whose sum is σ = 3199980288960. Its totient is φ = 272205696000.

The previous prime is 1023203030981. The next prime is 1023203031017. The reversal of 1023203031000 is 1303023201.

It is a super-2 number, since 2×1023203031000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857932 + ... + 1668068.

Almost surely, 2^{1023203031000} is an apocalyptic number.

1023203031000 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 1023203031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599990144480).

1023203031000 is an abundant number, since it is smaller than the sum of its proper divisors (2176777257960).

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

1023203031000 is a wasteful number, since it uses less digits than its factorization.

1023203031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810582 (or 810568 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 1023203031000 its reverse (1303023201), we get a palindrome (1024506054201).

The spelling of 1023203031000 in words is "one trillion, twenty-three billion, two hundred three million, thirty-one thousand".