611120531531 has 2 divisors, whose sum is σ = 611120531532. Its totient is φ = 611120531530.

The previous prime is 611120531479. The next prime is 611120531573. The reversal of 611120531531 is 135135021116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611120531531 - 2²⁶ = 611053422667 is a prime.

It is a super-2 number, since 2×611120531531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 611120531494 and 611120531503.

It is not a weakly prime, because it can be changed into another prime (611120531831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305560265765 + 305560265766.

It is an arithmetic number, because the mean of its divisors is an integer number (305560265766).

Almost surely, 2^611120531531 is an apocalyptic number.

611120531531 is a deficient number, since it is larger than the sum of its proper divisors (1).

611120531531 is an equidigital number, since it uses as much as digits as its factorization.

611120531531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 29.

Adding to 611120531531 its reverse (135135021116), we get a palindrome (746255552647).

The spelling of 611120531531 in words is "six hundred eleven billion, one hundred twenty million, five hundred thirty-one thousand, five hundred thirty-one".