1021041231 has 16 divisors (see below), whose sum is σ = 1623519744. Its totient is φ = 558084384.

The previous prime is 1021041223. The next prime is 1021041253. The reversal of 1021041231 is 1321401201.

It is not a de Polignac number, because 1021041231 - 2³ = 1021041223 is a prime.

It is a super-2 number, since 2×1021041231² = 2085050390803990722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021041231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021041431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056496 + ... + 1057461.

It is an arithmetic number, because the mean of its divisors is an integer number (101469984).

Almost surely, 2^1021041231 is an apocalyptic number.

1021041231 is a deficient number, since it is larger than the sum of its proper divisors (602478513).

1021041231 is a wasteful number, since it uses less digits than its factorization.

1021041231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113990.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1021041231 is about 31953.7357909838. The cubic root of 1021041231 is about 1006.9651181630.

Adding to 1021041231 its reverse (1321401201), we get a palindrome (2342442432).

The spelling of 1021041231 in words is "one billion, twenty-one million, forty-one thousand, two hundred thirty-one".