53211031 has 2 divisors, whose sum is σ = 53211032. Its totient is φ = 53211030.

The previous prime is 53211013. The next prime is 53211047. The reversal of 53211031 is 13011235.

Together with previous prime (53211013) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (53211047) can be obtained adding 53211031 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53211031 - 2⁷ = 53210903 is a prime.

It is a super-2 number, since 2×53211031² = 5662827640165922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53210996 and 53211014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53211091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26605515 + 26605516.

It is an arithmetic number, because the mean of its divisors is an integer number (26605516).

Almost surely, 2^53211031 is an apocalyptic number.

53211031 is a deficient number, since it is larger than the sum of its proper divisors (1).

53211031 is an equidigital number, since it uses as much as digits as its factorization.

53211031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 53211031 is about 7294.5891590959. The cubic root of 53211031 is about 376.1264640809.

Adding to 53211031 its reverse (13011235), we get a palindrome (66222266).

The spelling of 53211031 in words is "fifty-three million, two hundred eleven thousand, thirty-one".