2061431505 has 256 divisors, whose sum is σ = 4727808000. Its totient is φ = 830850048.

The previous prime is 2061431501. The next prime is 2061431531. The reversal of 2061431505 is 5051341602.

It is not a de Polignac number, because 2061431505 - 2² = 2061431501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2061431501) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 19265662 + ... + 19265768.

It is an arithmetic number, because the mean of its divisors is an integer number (18468000).

Almost surely, 2^2061431505 is an apocalyptic number.

It is an amenable number.

2061431505 is an abundant number, since it is smaller than the sum of its proper divisors (2666376495).

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

2061431505 is a wasteful number, since it uses less digits than its factorization.

2061431505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2061431505 is about 45402.9900447096. The cubic root of 2061431505 is about 1272.6909904863.

The spelling of 2061431505 in words is "two billion, sixty-one million, four hundred thirty-one thousand, five hundred five".