32131001021 has 16 divisors (see below), whose sum is σ = 37924352640. Its totient is φ = 26646770880.

The previous prime is 32131001017. The next prime is 32131001029. The reversal of 32131001021 is 12010013123.

It is a cyclic number.

It is not a de Polignac number, because 32131001021 - 2² = 32131001017 is a prime.

It is a super-2 number, since 2×32131001021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32131000987 and 32131001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131001029) 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, 300170 + ... + 392891.

It is an arithmetic number, because the mean of its divisors is an integer number (2370272040).

Almost surely, 2^32131001021 is an apocalyptic number.

It is an amenable number.

32131001021 is a deficient number, since it is larger than the sum of its proper divisors (5793351619).

32131001021 is a wasteful number, since it uses less digits than its factorization.

32131001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693284.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 32131001021 its reverse (12010013123), we get a palindrome (44141014144).

The spelling of 32131001021 in words is "thirty-two billion, one hundred thirty-one million, one thousand, twenty-one".