270021431 has 4 divisors (see below), whose sum is σ = 272147712. Its totient is φ = 267895152.

The previous prime is 270021397. The next prime is 270021469. The reversal of 270021431 is 134120072.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-270021431 is a prime.

It is a super-2 number, since 2×270021431² = 145823146398575522, 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 (270023431) 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, 1062950 + ... + 1063203.

It is an arithmetic number, because the mean of its divisors is an integer number (68036928).

Almost surely, 2^270021431 is an apocalyptic number.

270021431 is a deficient number, since it is larger than the sum of its proper divisors (2126281).

270021431 is a wasteful number, since it uses less digits than its factorization.

270021431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126280.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 270021431 is about 16432.3288367778. The cubic root of 270021431 is about 646.3475071830.

The spelling of 270021431 in words is "two hundred seventy million, twenty-one thousand, four hundred thirty-one".