31041404121 has 32 divisors (see below), whose sum is σ = 50950724608. Its totient is φ = 16369957440.

The previous prime is 31041404077. The next prime is 31041404123. The reversal of 31041404121 is 12140414013.

It is not a de Polignac number, because 31041404121 - 2¹³ = 31041395929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (31041404123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1686450 + ... + 1704756.

It is an arithmetic number, because the mean of its divisors is an integer number (1592210144).

Almost surely, 2^31041404121 is an apocalyptic number.

It is an amenable number.

31041404121 is a deficient number, since it is larger than the sum of its proper divisors (19909320487).

31041404121 is a wasteful number, since it uses less digits than its factorization.

31041404121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24541.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 31041404121 its reverse (12140414013), we get a palindrome (43181818134).

The spelling of 31041404121 in words is "thirty-one billion, forty-one million, four hundred four thousand, one hundred twenty-one".