1421123031 has 12 divisors (see below), whose sum is σ = 2160772120. Its totient is φ = 897551280.

The previous prime is 1421123009. The next prime is 1421123051. The reversal of 1421123031 is 1303211241.

It is not a de Polignac number, because 1421123031 - 2⁵ = 1421122999 is a prime.

It is a super-2 number, since 2×1421123031² = 4039181338477253922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421122995 and 1421123013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421123051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4155160 + ... + 4155501.

Almost surely, 2^1421123031 is an apocalyptic number.

1421123031 is a deficient number, since it is larger than the sum of its proper divisors (739649089).

1421123031 is a wasteful number, since it uses less digits than its factorization.

1421123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8310686 (or 8310683 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1421123031 is about 37697.7854919888. The cubic root of 1421123031 is about 1124.2870955923.

Adding to 1421123031 its reverse (1303211241), we get a palindrome (2724334272).

The spelling of 1421123031 in words is "one billion, four hundred twenty-one million, one hundred twenty-three thousand, thirty-one".