7312155061 has 4 divisors (see below), whose sum is σ = 7357015072. Its totient is φ = 7267295052.

The previous prime is 7312155013. The next prime is 7312155113. The reversal of 7312155061 is 1605512137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1605512137 = 71 ⋅22612847.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7312155061 is a prime.

It is a super-2 number, since 2×7312155061² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312155001) 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 in 3 ways as a sum of consecutive naturals, for example, 22429761 + ... + 22430086.

It is an arithmetic number, because the mean of its divisors is an integer number (1839253768).

Almost surely, 2^7312155061 is an apocalyptic number.

It is an amenable number.

7312155061 is a deficient number, since it is larger than the sum of its proper divisors (44860011).

7312155061 is a wasteful number, since it uses less digits than its factorization.

7312155061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44860010.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 7312155061 is about 85511.1399818760. The cubic root of 7312155061 is about 1940.9534992045.

Adding to 7312155061 its reverse (1605512137), we get a palindrome (8917667198).

The spelling of 7312155061 in words is "seven billion, three hundred twelve million, one hundred fifty-five thousand, sixty-one".