212103232531 has 2 divisors, whose sum is σ = 212103232532. Its totient is φ = 212103232530.

The previous prime is 212103232487. The next prime is 212103232547. The reversal of 212103232531 is 135232301212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212103232531 - 2²⁹ = 211566361619 is a prime.

It is a super-2 number, since 2×212103232531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212103232496 and 212103232505.

It is not a weakly prime, because it can be changed into another prime (212101232531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051616265 + 106051616266.

It is an arithmetic number, because the mean of its divisors is an integer number (106051616266).

Almost surely, 2^212103232531 is an apocalyptic number.

212103232531 is a deficient number, since it is larger than the sum of its proper divisors (1).

212103232531 is an equidigital number, since it uses as much as digits as its factorization.

212103232531 is an evil number, because the sum of its binary digits is even.

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

Adding to 212103232531 its reverse (135232301212), we get a palindrome (347335533743).

The spelling of 212103232531 in words is "two hundred twelve billion, one hundred three million, two hundred thirty-two thousand, five hundred thirty-one".