212021023031 has 8 divisors (see below), whose sum is σ = 215774254080. Its totient is φ = 208296334072.

The previous prime is 212021023013. The next prime is 212021023037. The reversal of 212021023031 is 130320120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021023031 - 2¹⁴ = 212021006647 is a prime.

It is a super-2 number, since 2×212021023031² (a number of 23 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 (212021023037) 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, 7120535 + ... + 7150248.

It is an arithmetic number, because the mean of its divisors is an integer number (26971781760).

Almost surely, 2^212021023031 is an apocalyptic number.

212021023031 is a deficient number, since it is larger than the sum of its proper divisors (3753231049).

212021023031 is a wasteful number, since it uses less digits than its factorization.

212021023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271045.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212021023031 its reverse (130320120212), we get a palindrome (342341143243).

The spelling of 212021023031 in words is "two hundred twelve billion, twenty-one million, twenty-three thousand, thirty-one".