210400124431 has 8 divisors (see below), whose sum is σ = 250911949824. Its totient is φ = 172501965240.

The previous prime is 210400124401. The next prime is 210400124447. The reversal of 210400124431 is 134421004012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210400124431 - 2¹⁵ = 210400091663 is a prime.

It is a super-2 number, since 2×210400124431² (a number of 23 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 (210400124401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653416375 + ... + 653416696.

It is an arithmetic number, because the mean of its divisors is an integer number (31363993728).

Almost surely, 2^210400124431 is an apocalyptic number.

210400124431 is a deficient number, since it is larger than the sum of its proper divisors (40511825393).

210400124431 is a wasteful number, since it uses less digits than its factorization.

210400124431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306833101.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 210400124431 its reverse (134421004012), we get a palindrome (344821128443).

The spelling of 210400124431 in words is "two hundred ten billion, four hundred million, one hundred twenty-four thousand, four hundred thirty-one".