1021441431 has 16 divisors (see below), whose sum is σ = 1424249856. Its totient is φ = 649926816.

The previous prime is 1021441423. The next prime is 1021441457. The reversal of 1021441431 is 1341441201.

It is not a de Polignac number, because 1021441431 - 2³ = 1021441423 is a prime.

It is a super-2 number, since 2×1021441431² = 2086685193926655522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021441398 and 1021441407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021441471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15961 + ... + 47933.

It is an arithmetic number, because the mean of its divisors is an integer number (89015616).

Almost surely, 2^1021441431 is an apocalyptic number.

1021441431 is a deficient number, since it is larger than the sum of its proper divisors (402808425).

1021441431 is a wasteful number, since it uses less digits than its factorization.

1021441431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32462.

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

The square root of 1021441431 is about 31959.9973560700. The cubic root of 1021441431 is about 1007.0966619208.

Adding to 1021441431 its reverse (1341441201), we get a palindrome (2362882632).

The spelling of 1021441431 in words is "one billion, twenty-one million, four hundred forty-one thousand, four hundred thirty-one".