1641212131 has 8 divisors (see below), whose sum is σ = 1768369680. Its totient is φ = 1514184672.

The previous prime is 1641212107. The next prime is 1641212141. The reversal of 1641212131 is 1312121461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1641212131 - 2⁹ = 1641211619 is a prime.

It is a super-2 number, since 2×1641212131² = 5387154517883122322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641212141) 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, 5476 + ... + 57553.

It is an arithmetic number, because the mean of its divisors is an integer number (221046210).

Almost surely, 2^1641212131 is an apocalyptic number.

1641212131 is a deficient number, since it is larger than the sum of its proper divisors (127157549).

1641212131 is a wasteful number, since it uses less digits than its factorization.

1641212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65045.

The product of its digits is 288, while the sum is 22.

The square root of 1641212131 is about 40511.8764191441. The cubic root of 1641212131 is about 1179.5641718552.

Adding to 1641212131 its reverse (1312121461), we get a palindrome (2953333592).

The spelling of 1641212131 in words is "one billion, six hundred forty-one million, two hundred twelve thousand, one hundred thirty-one".