1321041431 has 8 divisors (see below), whose sum is σ = 1328703600. Its totient is φ = 1313402112.

The previous prime is 1321041383. The next prime is 1321041433. The reversal of 1321041431 is 1341401231.

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 1321041431 - 2¹⁸ = 1320779287 is a prime.

It is a super-2 number, since 2×1321041431² = 3490300924837055522, which 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 (1321041433) 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, 117836 + ... + 128558.

It is an arithmetic number, because the mean of its divisors is an integer number (166087950).

Almost surely, 2^1321041431 is an apocalyptic number.

1321041431 is a deficient number, since it is larger than the sum of its proper divisors (7662169).

1321041431 is a wasteful number, since it uses less digits than its factorization.

1321041431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11425.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1321041431 is about 36346.1336458226. The cubic root of 1321041431 is about 1097.2497219023.

Adding to 1321041431 its reverse (1341401231), we get a palindrome (2662442662).

The spelling of 1321041431 in words is "one billion, three hundred twenty-one million, forty-one thousand, four hundred thirty-one".