10998405431 has 32 divisors (see below), whose sum is σ = 12331536000. Its totient is φ = 9744261120.

The previous prime is 10998405427. The next prime is 10998405433. The reversal of 10998405431 is 13450489901.

It is a cyclic number.

It is not a de Polignac number, because 10998405431 - 2² = 10998405427 is a prime.

It is a super-2 number, since 2×10998405431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10998405433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10287965 + ... + 10289033.

It is an arithmetic number, because the mean of its divisors is an integer number (385360500).

Almost surely, 2^10998405431 is an apocalyptic number.

10998405431 is a deficient number, since it is larger than the sum of its proper divisors (1333130569).

10998405431 is a wasteful number, since it uses less digits than its factorization.

10998405431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 10998405431 in words is "ten billion, nine hundred ninety-eight million, four hundred five thousand, four hundred thirty-one".