32153031421 has 4 divisors (see below), whose sum is σ = 36746321632. Its totient is φ = 27559741212.

The previous prime is 32153031403. The next prime is 32153031457. The reversal of 32153031421 is 12413035123.

It is a happy number.

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: 12413035123 = 81559 ⋅152197.

It is a cyclic number.

It is not a de Polignac number, because 32153031421 - 2¹⁷ = 32152900349 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 (32153031461) 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, 2296645095 + ... + 2296645108.

It is an arithmetic number, because the mean of its divisors is an integer number (9186580408).

Almost surely, 2^32153031421 is an apocalyptic number.

It is an amenable number.

32153031421 is a deficient number, since it is larger than the sum of its proper divisors (4593290211).

32153031421 is an equidigital number, since it uses as much as digits as its factorization.

32153031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593290210.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 32153031421 its reverse (12413035123), we get a palindrome (44566066544).

The spelling of 32153031421 in words is "thirty-two billion, one hundred fifty-three million, thirty-one thousand, four hundred twenty-one".