32121213031 has 4 divisors (see below), whose sum is σ = 32313555792. Its totient is φ = 31928870272.

The previous prime is 32121213013. The next prime is 32121213037. The reversal of 32121213031 is 13031212123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 32121213031 - 2¹³ = 32121204839 is a prime.

It is a super-2 number, since 2×32121213031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121213037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96171130 + ... + 96171463.

It is an arithmetic number, because the mean of its divisors is an integer number (8078388948).

Almost surely, 2^32121213031 is an apocalyptic number.

32121213031 is a deficient number, since it is larger than the sum of its proper divisors (192342761).

32121213031 is a wasteful number, since it uses less digits than its factorization.

32121213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192342760.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 32121213031 its reverse (13031212123), we get a palindrome (45152425154).

The spelling of 32121213031 in words is "thirty-two billion, one hundred twenty-one million, two hundred thirteen thousand, thirty-one".