10312203440 has 160 divisors (see below), whose sum is σ = 30184068096. Its totient is φ = 3182791680.

The previous prime is 10312203427. The next prime is 10312203487. The reversal of 10312203440 is 4430221301.

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

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, 626354 + ... + 642606.

Almost surely, 2^10312203440 is an apocalyptic number.

10312203440 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 10312203440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15092034048).

10312203440 is an abundant number, since it is smaller than the sum of its proper divisors (19871864656).

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

10312203440 is a wasteful number, since it uses less digits than its factorization.

10312203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387 (or 16381 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 10312203440 its reverse (4430221301), we get a palindrome (14742424741).

The spelling of 10312203440 in words is "ten billion, three hundred twelve million, two hundred three thousand, four hundred forty".