2101420431 has 36 divisors (see below), whose sum is σ = 3407485536. Its totient is φ = 1246460160.

The previous prime is 2101420429. The next prime is 2101420459. The reversal of 2101420431 is 1340241012.

2101420431 is a `hidden beast` number, since 210 + 1 + 4 + 20 + 431 = 666.

It is not a de Polignac number, because 2101420431 - 2¹ = 2101420429 is a prime.

It is a super-2 number, since 2×2101420431² = 8831935655648451522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101420471) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30655 + ... + 71711.

It is an arithmetic number, because the mean of its divisors is an integer number (94652376).

Almost surely, 2^2101420431 is an apocalyptic number.

2101420431 is a deficient number, since it is larger than the sum of its proper divisors (1306065105).

2101420431 is a wasteful number, since it uses less digits than its factorization.

2101420431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41132 (or 41118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2101420431 is about 45841.2525025222. The cubic root of 2101420431 is about 1280.8678260006.

Adding to 2101420431 its reverse (1340241012), we get a palindrome (3441661443).

The spelling of 2101420431 in words is "two billion, one hundred one million, four hundred twenty thousand, four hundred thirty-one".