61326222131 has 4 divisors (see below), whose sum is σ = 62983687632. Its totient is φ = 59668756632.

The previous prime is 61326222121. The next prime is 61326222137. The reversal of 61326222131 is 13122262316.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61326222131 is a prime.

It is a super-2 number, since 2×61326222131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61326222094 and 61326222103.

It is not an unprimeable number, because it can be changed into a prime (61326222137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828732695 + ... + 828732768.

It is an arithmetic number, because the mean of its divisors is an integer number (15745921908).

Almost surely, 2^61326222131 is an apocalyptic number.

61326222131 is a deficient number, since it is larger than the sum of its proper divisors (1657465501).

61326222131 is a wasteful number, since it uses less digits than its factorization.

61326222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657465500.

The product of its digits is 5184, while the sum is 29.

Adding to 61326222131 its reverse (13122262316), we get a palindrome (74448484447).

The spelling of 61326222131 in words is "sixty-one billion, three hundred twenty-six million, two hundred twenty-two thousand, one hundred thirty-one".