1631400223 has 8 divisors (see below), whose sum is σ = 1745174592. Its totient is φ = 1519604736.

The previous prime is 1631400193. The next prime is 1631400229. The reversal of 1631400223 is 3220041361.

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 1631400223 - 2⁹ = 1631399711 is a prime.

It is a super-2 number, since 2×1631400223² = 5322933375208899458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1631400194 and 1631400203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631400229) 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, 493015 + ... + 496312.

It is an arithmetic number, because the mean of its divisors is an integer number (218146824).

Almost surely, 2^1631400223 is an apocalyptic number.

1631400223 is a deficient number, since it is larger than the sum of its proper divisors (113774369).

1631400223 is an equidigital number, since it uses as much as digits as its factorization.

1631400223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989441.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1631400223 is about 40390.5957247476. The cubic root of 1631400223 is about 1177.2088158661.

Adding to 1631400223 its reverse (3220041361), we get a palindrome (4851441584).

The spelling of 1631400223 in words is "one billion, six hundred thirty-one million, four hundred thousand, two hundred twenty-three".