1601260311 has 16 divisors (see below), whose sum is σ = 2583546624. Its totient is φ = 861181824.

The previous prime is 1601260307. The next prime is 1601260337. The reversal of 1601260311 is 1130621061.

It is not a de Polignac number, because 1601260311 - 2² = 1601260307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601260411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2242305 + ... + 2243018.

It is an arithmetic number, because the mean of its divisors is an integer number (161471664).

Almost surely, 2^1601260311 is an apocalyptic number.

1601260311 is a deficient number, since it is larger than the sum of its proper divisors (982286313).

1601260311 is a wasteful number, since it uses less digits than its factorization.

1601260311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485350.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1601260311 is about 40015.7507864091. The cubic root of 1601260311 is about 1169.9141123307.

Adding to 1601260311 its reverse (1130621061), we get a palindrome (2731881372).

The spelling of 1601260311 in words is "one billion, six hundred one million, two hundred sixty thousand, three hundred eleven".