10311420440 has 16 divisors (see below), whose sum is σ = 23200696080. Its totient is φ = 4124568160.

The previous prime is 10311420437. The next prime is 10311420451. The reversal of 10311420440 is 4402411301.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128892716 + ... + 128892795.

It is an arithmetic number, because the mean of its divisors is an integer number (1450043505).

Almost surely, 2^10311420440 is an apocalyptic number.

10311420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311420440 is an abundant number, since it is smaller than the sum of its proper divisors (12889275640).

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

10311420440 is a wasteful number, since it uses less digits than its factorization.

10311420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257785522 (or 257785518 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10311420440 its reverse (4402411301), we get a palindrome (14713831741).

The spelling of 10311420440 in words is "ten billion, three hundred eleven million, four hundred twenty thousand, four hundred forty".