1420401231 has 8 divisors (see below), whose sum is σ = 2104298160. Its totient is φ = 946934136.

The previous prime is 1420401217. The next prime is 1420401233. The reversal of 1420401231 is 1321040241.

1420401231 is a `hidden beast` number, since 14 + 20 + 401 + 231 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1420401231 is a prime.

It is a super-2 number, since 2×1420401231² = 4035079314052630722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420401233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26303700 + ... + 26303753.

It is an arithmetic number, because the mean of its divisors is an integer number (263037270).

Almost surely, 2^1420401231 is an apocalyptic number.

1420401231 is a deficient number, since it is larger than the sum of its proper divisors (683896929).

1420401231 is an equidigital number, since it uses as much as digits as its factorization.

1420401231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52607462 (or 52607456 counting only the distinct ones).

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

The square root of 1420401231 is about 37688.2107694170. The cubic root of 1420401231 is about 1124.0967184897.

Adding to 1420401231 its reverse (1321040241), we get a palindrome (2741441472).

The spelling of 1420401231 in words is "one billion, four hundred twenty million, four hundred one thousand, two hundred thirty-one".