2621481431 has 4 divisors (see below), whose sum is σ = 2625354312. Its totient is φ = 2617608552.

The previous prime is 2621481391. The next prime is 2621481439. The reversal of 2621481431 is 1341841262.

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 2621481431 - 2¹⁸ = 2621219287 is a prime.

It is a super-2 number, since 2×2621481431² = 13744329786155615522, 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 (2621481439) 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, 1935425 + ... + 1936778.

It is an arithmetic number, because the mean of its divisors is an integer number (656338578).

Almost surely, 2^2621481431 is an apocalyptic number.

2621481431 is a deficient number, since it is larger than the sum of its proper divisors (3872881).

2621481431 is an equidigital number, since it uses as much as digits as its factorization.

2621481431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872880.

The product of its digits is 9216, while the sum is 32.

The square root of 2621481431 is about 51200.4045980107. The cubic root of 2621481431 is about 1378.8454656108.

The spelling of 2621481431 in words is "two billion, six hundred twenty-one million, four hundred eighty-one thousand, four hundred thirty-one".