1021431441 has 8 divisors (see below), whose sum is σ = 1364524704. Its totient is φ = 679646240.

The previous prime is 1021431421. The next prime is 1021431461. The reversal of 1021431441 is 1441341201.

It is an interprime number because it is at equal distance from previous prime (1021431421) and next prime (1021431461).

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 1021431441 - 2¹⁵ = 1021398673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021431421) 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, 325191 + ... + 328316.

It is an arithmetic number, because the mean of its divisors is an integer number (170565588).

Almost surely, 2^1021431441 is an apocalyptic number.

It is an amenable number.

1021431441 is a deficient number, since it is larger than the sum of its proper divisors (343093263).

1021431441 is an equidigital number, since it uses as much as digits as its factorization.

1021431441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654031.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1021431441 is about 31959.8410665635. The cubic root of 1021431441 is about 1007.0933786754.

Adding to 1021431441 its reverse (1441341201), we get a palindrome (2462772642).

The spelling of 1021431441 in words is "one billion, twenty-one million, four hundred thirty-one thousand, four hundred forty-one".