1616231351 has 4 divisors (see below), whose sum is σ = 1847121552. Its totient is φ = 1385341152.

The previous prime is 1616231341. The next prime is 1616231377. The reversal of 1616231351 is 1531326161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1531326161 = 3511 ⋅436151.

It is a cyclic number.

It is not a de Polignac number, because 1616231351 - 2¹⁰ = 1616230327 is a prime.

It is a super-2 number, since 2×1616231351² = 5224407559910570402, which 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 (1616231311) 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, 115445090 + ... + 115445103.

It is an arithmetic number, because the mean of its divisors is an integer number (461780388).

Almost surely, 2^1616231351 is an apocalyptic number.

1616231351 is a deficient number, since it is larger than the sum of its proper divisors (230890201).

1616231351 is an equidigital number, since it uses as much as digits as its factorization.

1616231351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230890200.

The product of its digits is 3240, while the sum is 29.

The square root of 1616231351 is about 40202.3799171144. The cubic root of 1616231351 is about 1173.5488591705.

The spelling of 1616231351 in words is "one billion, six hundred sixteen million, two hundred thirty-one thousand, three hundred fifty-one".