10440221731 has 2 divisors, whose sum is σ = 10440221732. Its totient is φ = 10440221730.

The previous prime is 10440221711. The next prime is 10440221773. The reversal of 10440221731 is 13712204401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10440221731 - 2¹⁵ = 10440188963 is a prime.

It is a super-2 number, since 2×10440221731² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10440221696 and 10440221705.

It is not a weakly prime, because it can be changed into another prime (10440221711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220110865 + 5220110866.

It is an arithmetic number, because the mean of its divisors is an integer number (5220110866).

Almost surely, 2^10440221731 is an apocalyptic number.

10440221731 is a deficient number, since it is larger than the sum of its proper divisors (1).

10440221731 is an equidigital number, since it uses as much as digits as its factorization.

10440221731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The spelling of 10440221731 in words is "ten billion, four hundred forty million, two hundred twenty-one thousand, seven hundred thirty-one".