1400121031 has 4 divisors (see below), whose sum is σ = 1400323032. Its totient is φ = 1399919032.

The previous prime is 1400120993. The next prime is 1400121049. The reversal of 1400121031 is 1301210041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301210041 = 19 ⋅68484739.

It is a cyclic number.

It is not a de Polignac number, because 1400121031 - 2¹⁷ = 1399989959 is a prime.

It is a super-2 number, since 2×1400121031² = 3920677802897005922, 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 (1400121631) 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, 90220 + ... + 104593.

It is an arithmetic number, because the mean of its divisors is an integer number (350080758).

Almost surely, 2^1400121031 is an apocalyptic number.

1400121031 is a deficient number, since it is larger than the sum of its proper divisors (202001).

1400121031 is an equidigital number, since it uses as much as digits as its factorization.

1400121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202000.

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

The square root of 1400121031 is about 37418.1911775543. The cubic root of 1400121031 is about 1118.7211783052.

Adding to 1400121031 its reverse (1301210041), we get a palindrome (2701331072).

The spelling of 1400121031 in words is "one billion, four hundred million, one hundred twenty-one thousand, thirty-one".