212512031 has 2 divisors, whose sum is σ = 212512032. Its totient is φ = 212512030.

The previous prime is 212511997. The next prime is 212512039. The reversal of 212512031 is 130215212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212512031 - 2²² = 208317727 is a prime.

It is a super-2 number, since 2×212512031² = 90322726639489922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212512039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106256015 + 106256016.

It is an arithmetic number, because the mean of its divisors is an integer number (106256016).

Almost surely, 2^212512031 is an apocalyptic number.

212512031 is a deficient number, since it is larger than the sum of its proper divisors (1).

212512031 is an equidigital number, since it uses as much as digits as its factorization.

212512031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 212512031 is about 14577.7923911681. The cubic root of 212512031 is about 596.7528575521.

Adding to 212512031 its reverse (130215212), we get a palindrome (342727243).

The spelling of 212512031 in words is "two hundred twelve million, five hundred twelve thousand, thirty-one".