61344431310 has 32 divisors (see below), whose sum is σ = 148040055072. Its totient is φ = 16268135040.

The previous prime is 61344431287. The next prime is 61344431321. The reversal of 61344431310 is 1313444316.

It is a super-2 number, since 2×61344431310² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5643229 + ... + 5654088.

It is an arithmetic number, because the mean of its divisors is an integer number (4626251721).

Almost surely, 2^61344431310 is an apocalyptic number.

61344431310 is an abundant number, since it is smaller than the sum of its proper divisors (86695623762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61344431310 is a wasteful number, since it uses less digits than its factorization.

61344431310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11297508.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 61344431310 its reverse (1313444316), we get a palindrome (62657875626).

The spelling of 61344431310 in words is "sixty-one billion, three hundred forty-four million, four hundred thirty-one thousand, three hundred ten".