1020231641 has 16 divisors (see below), whose sum is σ = 1201679808. Its totient is φ = 853934400.

The previous prime is 1020231637. The next prime is 1020231671. The reversal of 1020231641 is 1461320201.

It is not a de Polignac number, because 1020231641 - 2² = 1020231637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020231671) 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, 47786 + ... + 65756.

It is an arithmetic number, because the mean of its divisors is an integer number (75104988).

Almost surely, 2^1020231641 is an apocalyptic number.

1020231641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020231641 is a deficient number, since it is larger than the sum of its proper divisors (181448167).

1020231641 is a wasteful number, since it uses less digits than its factorization.

1020231641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18392.

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

The square root of 1020231641 is about 31941.0651199987. The cubic root of 1020231641 is about 1006.6989048026.

Adding to 1020231641 its reverse (1461320201), we get a palindrome (2481551842).

The spelling of 1020231641 in words is "one billion, twenty million, two hundred thirty-one thousand, six hundred forty-one".