22450402031 has 4 divisors (see below), whose sum is σ = 22450800792. Its totient is φ = 22450003272.

The previous prime is 22450401991. The next prime is 22450402043. The reversal of 22450402031 is 13020405422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13020405422 = 2 ⋅6510202711.

It is a cyclic number.

It is not a de Polignac number, because 22450402031 - 2²⁶ = 22383293167 is a prime.

It is a super-2 number, since 2×22450402031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22450401988 and 22450402006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22450402061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97616 + ... + 233301.

It is an arithmetic number, because the mean of its divisors is an integer number (5612700198).

Almost surely, 2^22450402031 is an apocalyptic number.

22450402031 is a deficient number, since it is larger than the sum of its proper divisors (398761).

22450402031 is an equidigital number, since it uses as much as digits as its factorization.

22450402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398760.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 22450402031 its reverse (13020405422), we get a palindrome (35470807453).

The spelling of 22450402031 in words is "twenty-two billion, four hundred fifty million, four hundred two thousand, thirty-one".