31457280001 has 4 divisors (see below), whose sum is σ = 35951177152. Its totient is φ = 26963382852.

The previous prime is 31457279981. The next prime is 31457280007. The reversal of 31457280001 is 10008275413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31457280001 - 2⁵ = 31457279969 is a prime.

It is a super-2 number, since 2×31457280001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31457280007) 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, 2246948565 + ... + 2246948578.

It is an arithmetic number, because the mean of its divisors is an integer number (8987794288).

It is a Proth number, since it is equal to 1875 ⋅ 2²⁴ + 1 and 1875 < 2²⁴.

Almost surely, 2^31457280001 is an apocalyptic number.

It is an amenable number.

31457280001 is a deficient number, since it is larger than the sum of its proper divisors (4493897151).

31457280001 is an equidigital number, since it uses as much as digits as its factorization.

31457280001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493897150.

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 31457280001 in words is "thirty-one billion, four hundred fifty-seven million, two hundred eighty thousand, one".