1720343426131 has 32 divisors (see below), whose sum is σ = 2013425683200. Its totient is φ = 1453219447680.

The previous prime is 1720343425967. The next prime is 1720343426177. The reversal of 1720343426131 is 1316243430271.

It is not a de Polignac number, because 1720343426131 - 2³¹ = 1718195942483 is a prime.

It is a super-2 number, since 2×1720343426131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1720343426731) 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 31 ways as a sum of consecutive naturals, for example, 37517040 + ... + 37562866.

It is an arithmetic number, because the mean of its divisors is an integer number (62919552600).

Almost surely, 2^{1720343426131} is an apocalyptic number.

1720343426131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1720343426131 is a deficient number, since it is larger than the sum of its proper divisors (293082257069).

1720343426131 is a wasteful number, since it uses less digits than its factorization.

1720343426131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49299.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 1720343426131 in words is "one trillion, seven hundred twenty billion, three hundred forty-three million, four hundred twenty-six thousand, one hundred thirty-one".