1021641341 has 4 divisors (see below), whose sum is σ = 1167590112. Its totient is φ = 875692572.

The previous prime is 1021641317. The next prime is 1021641437. The reversal of 1021641341 is 1431461201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1431461201 = 12239 ⋅116959.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021641341 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 (1021641041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72974375 + ... + 72974388.

It is an arithmetic number, because the mean of its divisors is an integer number (291897528).

Almost surely, 2^1021641341 is an apocalyptic number.

It is an amenable number.

1021641341 is a deficient number, since it is larger than the sum of its proper divisors (145948771).

1021641341 is an equidigital number, since it uses as much as digits as its factorization.

1021641341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145948770.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1021641341 is about 31963.1247064488. The cubic root of 1021641341 is about 1007.1623584795.

The spelling of 1021641341 in words is "one billion, twenty-one million, six hundred forty-one thousand, three hundred forty-one".