10431220409 has 2 divisors, whose sum is σ = 10431220410. Its totient is φ = 10431220408.

The previous prime is 10431220363. The next prime is 10431220433. The reversal of 10431220409 is 90402213401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10430128384 + 1092025 = 102128^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 10431220409 - 2¹⁶ = 10431154873 is a prime.

It is a super-2 number, since 2×10431220409² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10431220469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5215610204 + 5215610205.

It is an arithmetic number, because the mean of its divisors is an integer number (5215610205).

Almost surely, 2^10431220409 is an apocalyptic number.

It is an amenable number.

10431220409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10431220409 is an equidigital number, since it uses as much as digits as its factorization.

10431220409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 10431220409 in words is "ten billion, four hundred thirty-one million, two hundred twenty thousand, four hundred nine".