523211231531 has 2 divisors, whose sum is σ = 523211231532. Its totient is φ = 523211231530.

The previous prime is 523211231519. The next prime is 523211231633. The reversal of 523211231531 is 135132112325.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523211231531 is a prime.

It is a super-2 number, since 2×523211231531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 523211231494 and 523211231503.

It is not a weakly prime, because it can be changed into another prime (523211231831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261605615765 + 261605615766.

It is an arithmetic number, because the mean of its divisors is an integer number (261605615766).

Almost surely, 2^523211231531 is an apocalyptic number.

523211231531 is a deficient number, since it is larger than the sum of its proper divisors (1).

523211231531 is an equidigital number, since it uses as much as digits as its factorization.

523211231531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 29.

Adding to 523211231531 its reverse (135132112325), we get a palindrome (658343343856).

The spelling of 523211231531 in words is "five hundred twenty-three billion, two hundred eleven million, two hundred thirty-one thousand, five hundred thirty-one".