1601037731123 has 4 divisors (see below), whose sum is σ = 1603812493800. Its totient is φ = 1598262968448.

The previous prime is 1601037731099. The next prime is 1601037731143. The reversal of 1601037731123 is 3211377301061.

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

It is a cyclic number.

It is not a de Polignac number, because 1601037731123 - 2³⁴ = 1583857861939 is a prime.

It is a super-2 number, since 2×1601037731123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601037731143) 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, 1387380473 + ... + 1387381626.

It is an arithmetic number, because the mean of its divisors is an integer number (400953123450).

Almost surely, 2^{1601037731123} is an apocalyptic number.

1601037731123 is a deficient number, since it is larger than the sum of its proper divisors (2774762677).

1601037731123 is an equidigital number, since it uses as much as digits as its factorization.

1601037731123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774762676.

The product of its (nonzero) digits is 15876, while the sum is 35.

The spelling of 1601037731123 in words is "one trillion, six hundred one billion, thirty-seven million, seven hundred thirty-one thousand, one hundred twenty-three".