1021531141 has 8 divisors (see below), whose sum is σ = 1026428480. Its totient is φ = 1016644608.

The previous prime is 1021531129. The next prime is 1021531163. The reversal of 1021531141 is 1411351201.

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 1021531141 - 2⁵ = 1021531109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021501141) 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, 233920 + ... + 238246.

It is an arithmetic number, because the mean of its divisors is an integer number (128303560).

Almost surely, 2^1021531141 is an apocalyptic number.

It is an amenable number.

1021531141 is a deficient number, since it is larger than the sum of its proper divisors (4897339).

1021531141 is an equidigital number, since it uses as much as digits as its factorization.

1021531141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1021531141 is about 31961.4007984631. The cubic root of 1021531141 is about 1007.1261444390.

Adding to 1021531141 its reverse (1411351201), we get a palindrome (2432882342).

The spelling of 1021531141 in words is "one billion, twenty-one million, five hundred thirty-one thousand, one hundred forty-one".