1210140031 has 4 divisors (see below), whose sum is σ = 1223737200. Its totient is φ = 1196542864.

The previous prime is 1210139981. The next prime is 1210140047. The reversal of 1210140031 is 1300410121.

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-1210140031 is a prime.

It is a super-2 number, since 2×1210140031² = 2928877789257361922, 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 = 1210139993 and 1210140020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210143031) 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, 6798451 + ... + 6798628.

It is an arithmetic number, because the mean of its divisors is an integer number (305934300).

Almost surely, 2^1210140031 is an apocalyptic number.

1210140031 is a deficient number, since it is larger than the sum of its proper divisors (13597169).

1210140031 is an equidigital number, since it uses as much as digits as its factorization.

1210140031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13597168.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210140031 is about 34787.0670077257. The cubic root of 1210140031 is about 1065.6433418881.

Adding to 1210140031 its reverse (1300410121), we get a palindrome (2510550152).

The spelling of 1210140031 in words is "one billion, two hundred ten million, one hundred forty thousand, thirty-one".