1231101403 has 8 divisors (see below), whose sum is σ = 1409476608. Its totient is φ = 1053352104.

The previous prime is 1231101397. The next prime is 1231101449. The reversal of 1231101403 is 3041011321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231101403 - 2²⁵ = 1197546971 is a prime.

It is a super-2 number, since 2×1231101403² = 3031221328937136818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231101463) 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, 152251 + ... + 160132.

It is an arithmetic number, because the mean of its divisors is an integer number (176184576).

Almost surely, 2^1231101403 is an apocalyptic number.

1231101403 is a deficient number, since it is larger than the sum of its proper divisors (178375205).

1231101403 is an equidigital number, since it uses as much as digits as its factorization.

1231101403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312953.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1231101403 is about 35087.0546355775. The cubic root of 1231101403 is about 1071.7609814976.

Adding to 1231101403 its reverse (3041011321), we get a palindrome (4272112724).

The spelling of 1231101403 in words is "one billion, two hundred thirty-one million, one hundred one thousand, four hundred three".